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Anime & Manga
- Accel World has Silver Crow, Lime Bell, Cyan Pile, Red Rider, Scarlet Rain, Cherry Rook, Yellow Radio, Green Grandee, Blue Knight, Purple Thorn, White Cosmos, Ivory Tower, Orchid Oracle, Crimson Kingbolt, Coral Merrow, Orange Raptor, Violet Dancer, etc.
- The characters of Amatsuki are named after traditional Japanese colours, which are often reflected in their designs, e.g. 'kon' is a dark blue colour, and the character Kon has blue eyes and favours blue clothes.
- The two main characters of Ano Ko ni Kisu to Shirayuri wo are named Shiramine Ayaka (shira meaning "white") and Kurosawa Yurine (kuro meaning "black") − although ironically, despite their names Ayaka is black-haired while Yurine is blonde.
- The Weston Academy Prefects in Black Butler - Edgar Redmond, Laurence Bluer, Gregory Violet, and Herman Greenhill.
- Byakuya was designed to be a contrast to Ichigo. Ichigo's family name is "Kurosaki" which means "Black Promontory" and Byakuya's name is centred around the meaning for "white". His family name "Kuchiki" also means "rotting wood". During their final battle, Ichigo's power is jet black and Byakuya's power is pure white. They're fighting on top of a dark promontory surrounded by a forest of white, dead trees.
- The Kuchiki family is all centred around colour naming. Ginrei's name means "silver", Byakuya's name means "white" and Byakuya's deceased father was called Soujun, a name meaning "Green/blue".
- Lampshaded in-universe: Ukitake keeps buying Hitsugaya gifts which annoys the younger captain. When Hitsugaya finally managed to get Ukitake to explain why, Ukitake pointed out that they both have white hair, and that his name is Juushirou and Hitsugaya's name is Toushirou making them both Shirou-chan.note Hitsugaya isn't impressed.
- Numerous characters have color-coded names in Brigadoon: Marin and Melan. Notably, the Gun-swordsmen's last names refer to their color. Thus, Melan is "Melan Blue."
- Several major characters in Code Geass have the word 'red' in their names. Lelouch Lamperouge's surname is French for 'red lamp'. Suzaku Kururugi's first name is the same as that of a mythical scarlet bird. Kallen's Japanese surname, Kouzuki, is written with the kanji for 'crimson moon'.
- In Darker Than Black, those who work for the Syndicate have color-themed code names, mostly in Chinese. There's Hei (black), Yin (silver), Bai (white), Huang (yellow), and Amber (obvious), to name a few.
- Detective Conan: The most notable example is Shuichi Akai. "Akai" means "red" and many chapters and cases he appears have "red" or "scarlet" in the title. Overall, his name is a Shout-Out to both Char Aznable himself from ''Mobile Suit Gundam, who is nicknamed "Red Comet" due to his red Zaku, and to Char's seiyuu Shuichi Ikeda. Shuichi Akai eventually becomes The Danza.
- The Red Ribbon Army in Dragon Ball has such soldiers as: General Brown, Colonel Silver, General White, Sergeant Murasaki (purple), General Blue, Colonel Violet, General Copper, Adjutant Black, and Commander Red. Even Tao Pai Pai fits the pattern, since his name means "peach-white-white". Androids 17 and 18 (created by former Red Ribbon scientist Dr. Gero) also fit in, as their real names are Lapis and Lazuli (named after the deep blue gem), though this wasn't revealed until an interview decades after the manga finished.
- The Cthuwulf in the Iczer series. Named characters are Cobalt, Sepia, Sir Violet, Sister Grey, and Commander Magenta (from the Golden Warrior Iczer-One manga).
- Jewelpet Kira Deco: the Kira Deco 5 are a Sentai team that have colors both in their civillian names and code names; Pink Ohmiya (Shiny Pink), Retsu Akagi (Burning Red), Blue Knight Ozaki (Blue Knight Blue), Midori Akagi (Smart Green) and Kiichi Furano (Slow Life Yellow).
- In Kuroko no Basuke, all plot-relevant character from Teikou with the exception of Sanada have names spelled with colors. And with the exception of Nijimura, they all have matching hair and eye colors. Haizaki is a subversion that he used to have hair color match his eye, but in highschool dye his hair black.
- Kuroko, "Kuro"/Black (blue hair and eyes despite the "black" kanji in his name)
- Kise, "Ki"/Yellow
- Midorima, "Midori"/Green
- Aomine, "Ao"/Blue
- Murasakibara, "Murasaki"/Purple
- Akashi, "Aka"/Red
- Momoi, "Momo"/Pink
- Haizaki, "Hai"/Gray/Ash
- Nijimura, "Niji"/Rainbow
- Shirogane "Shiro"/White
- In the Legend of Zelda: Four Swords manga, Link wields the Four Sword, which splits him into four versions of himself, each wearing a different-colored tunic. There's Green, Blue, Red, and Vio, which is short for Violet.
- Everyone in Magic Kaito has this: black (Kuroba), blue (Aoko), red (Akako), yellow (Kounosuke) white (Hakuba), silver (Ginzou), and pink (Momoi).
- In Mahoraba all characters have a colour in their surname, usually in Japanese. The listnote consists of at least 22 characters with unique colours (there are more characters, but some aren't named, and some are related).
- My Monster Secret: Many characters have a color in their names, like Kuromine (black), Shiragami (white), Aizawa (blue) or Mikan (orange − although it's the fruit).
- The Three Admirals in One Piece follow this as well: Their code-names are Akainu (Red Dog), Aokiji (Blue Pheasant) and Kizaru (Yellow Monkey). Also a case of Religious and Mythological Theme Naming, as a dog, pheasant, and monkey were the animals that accompanied the folk hero Momotaro on his journey.
- The next two admirals are called Fujitora (Purple Tiger) and Ryokugyu (Green Bull).
- In tenth movie Strong World, Shiki's main crewmembers have a color in their name. Golden Lion Shiki. Doctor Indigo. Scarlett.
- The Pokédex holders from Pokémon Special are named for the video game titles that the characters they're based on are from (Red, Blue, Green etc.), with Yellow and Emerald being canon foreigners.
- Pretty Cure
- Futari wa Pretty Cure actually gained this trope in the English dub, with Nagisa becoming Natalie Blackstone and Honoka becoming Hannah Whitehouse.
- In fact, Honoka's original surname is Yukishiro, meaning "snow castle", but if "shiro" is written differently, the meaning becomes "snow white".
- Nagisa had it in the original too. "Misumi" was spelled with the kanji "sumi", which means "black ink".
- Fresh Pretty Cure! has a similar theme. The first two Pretty Cures are Love Momozono and Miki Aono. The remaining two, Inori Yamabuki and Setsuna Higashi, don't follow this theme (Setsuna and her former comrades are named after speed and cardinal directions).
- Smile Pretty Cure!: four of the five Cures have their signature colors in their names: Akane Hino, Yayoi Kise, Nao Midorikawa and Reika Aoki.
- Futari wa Pretty Cure actually gained this trope in the English dub, with Nagisa becoming Natalie Blackstone and Honoka becoming Hannah Whitehouse.
- Almost everyone in Rosario + Vampire has the kanji for a color somewhere in their names. Akashiya Moka (red), Aono Tsukune (blue), Shirayuki Mizore (white), Kurono Kurumu (black), Morioka Ginei (silver) and Sendou Yukari (written with the kanji for "purple"). These colors are appropriate for the characters, such as Mizore having ice powers and Gin being a werewolf.
- In Samurai Flamenco, all the Flamengers (With the sole exception of the main character and Red Ranger Masayoshi Hazama) have the word for their respective colors at the beginning of their last names (Soichi Aoshima, Sakura Momoi, Hekiru Midorikawa and Anji Kuroki.)
- The girls of Tokyo Mew Mew are all named after plants or desserts, and their last names follow the pattern of Color Place (Momomiya = Peach Shrine, Midorikawa = Green River, etc.)
- The Ravens, very obscure vampiric foes of the original X-Factor, all had color names: Crimson, Azure, Coral, Cerise, Beryl, Ruby, and Cobalt.
- In Super Sentai Vs Power Rangers The Liveblog, Radiguet's six monsters are all named after a color in Japanese and their main elemental powers: Akire (red fire), Aocean (blue ocean), Midorungle (green jungle), Momortex (pink vortex), Darkuroi (black darkness), and Kithunder (yellow thunder).
- A.A. Pessimal takes a look at the Captain Scarlet world in the story When The War Is Over. Spectrum needs a lot of operatives. But the English language has only a limited number of colour terms. How do you get past the bottleneck and get employee numbers up to establishment? The tale discusses various imaginative ways to name new officers...
Films — Live-Action
- Mr. Blue, Mr. Grey, Mr. Brown and Mr. Green (note that these are all quite normal American surnames) from The Taking of Pelham One Two Three
- Reservoir Dogs contained an homage to Pelham with Mr. Blonde, Mr. Blue, Mr. Brown, Mr. Orange, Mr. Pink, and Mr. White. (Although, to be fair, these names were assigned aliases deliberately chosen to adhere to a theme.) Some guy on some other job is Mr. Purple according to Joe, or he was just claiming so to shut down Mr. Pink's complaints about his alias.
- In Quantum of Solace, Mr. White's employer is a certain Dominic Greene, and one of Greene's subordinates is a Mr. Slate.
- Coincidentally occurs among a few cast members of School of Rock: Jack Black, Mike White, Sarah Silverman and Jordan-Clair Green.
- In Thief of Time, after the Auditors take human form en masse, they name themselves after various colours, possibly a nod towards Reservoir Dogs. Since there's so many of them, they're hard pressed for available colors, such as one furiously arguing that yes, dark avocado is a color so shut up. Not to mention arguing over which colors are higher in hierarchy and trying to take them for themselves.
- There is a famous series of picture books from Sweden about three unmarried sisters sharing a house. While not their real names, they are always called after the colours they wear: Aunt Green, Aunt Brown and Aunt Lavender. Their neighbour is similarly known as Uncle Blue.
- In the Casson family series, all four children are named after colours, their parents being artists. The eldest is Cadmium Gold, and the colour yellow sums up her personality pretty well, she is bright, cheerful and everyone likes her. Her younger brother Indigo (dark blue) is quieter, thoughtful and sensitive. He also likes to watch the starry sky at night. Saffron on the other hand is a proud, independent girl who feels lonely and isolated since she found out that she was adopted when her mother, her stepmother's twin sister, died. Saffron is outspoken, direct and can be quite harsh at times. It is said that she resembles Cadmium, meaning she is very pretty. The youngest is Permanent Rose, an adorable, very stubborn girl and the artist of the family. She nearly died when she was born, so her mother named her Permanent Rose, as a promise that she would stay.
- From the Aubrey-Maturin series: Aubrey and his friend and fellow post-captain Heneage Dundas discuss the captain of HMS Iris, who not only wants to dress his bargemen in the colors of the rainbow (due to the connotation of his ship's name), but specifically seeks out sailors named for said colors: e.g., with surnames like "Scarlett," "White," or "Green." He offered Dundas a brass "chaser" cannon in exchange for one of his sailors whose name was Blew. (Dundas declined, sharing with Aubrey a dislike for "costumed" bargemen.)
- In Warrior Cats, the first part of cats' names come from things a forest cat would know, such as plants, animals, and natural objects. They also use a lot of colors — every basic color except purple and pink. They even use some more unusual colors, such as "golden", "silver", "copper", "russet", "tawny", "amber", and "fallow". Oddly enough, out of over 1000 characters, "white" is the most common prefix of all, and even "fallow" got used about five times, but "brown" only got used once, and the cat in question disappeared from the cast list before recieving his warrior name.
- The Good The Bad And The Mediochre. Mediochre himself insists his name is a shade of red. His boss is named Kiwi, a shade of green. The dragon he encounters is named Deep Ocean, which she tells him is a shade of blue. The Big Bad uses the code name 'Sapphire', another shade of blue.
- Each of stories that make up Brothers of the Snake is named in "[color] [X]" pattern, such as Black Gold, Blue Blood or Crimson Wake.
- Ro Te O has a TV show called Crimson which is crucial to the plot. In it, there's the titular thief Crimson and the White Knight (a Kaitou).
- All four of The Ultra Violets are named after colours: Iris, Cheri, Scarlet, and Opaline.
- In Domina, Akane and her sisters all have color names: Midori (green), Shiro (white), Murasaki (violet), and Akane (red). The trend apparently started with Midori: Despite being pure-blooded Japanese, she has green eyes, which are extremely rare. It seems like the rest were just named to fit the theme.
- The vast majority of Super Sentai shows feature color-based codenames for its heroes, to the point that it's easier to name the handful of exceptions where they don't use color-based codenames (which are J.A.K.Q. Dengekitai, Battle Fever J, Taiyou Sentai Sun Vulcan, Dengeki Sentai Changeman, Kyoryu Sentai Zyuranger, Gosei Sentai Dairanger, Ressha Sentai Tokkyuger, and Doubutsu Sentai Zyuohger).
- Blue's Clues has the title character, who in a subversion of color-related norms is female. Several other animal characters are also named for their colors, such as the puppies Magenta and Green, and kittens Orange and Periwinkle.
- Pretty Guardian Sailor Moon Act Zero has the three policemen Kuroi (black), Shiroi (white) and Akai (red).
- Members of MAC in Ultraman Leo include Kuroda (black), Akaishi (red), Aoshima (blue), Shirakawa & Shiraido (white), and Momoi Haruko (pink). By the way, all these individuals died violently.
- All of the rivals in Banzai Run follow this theme: Green Machine, Blue Beard, Yellow Belly, and Red Hot.
- In Captain Scarlet and the Mysterons, all code names are colours: Captain Scarlet, Lieutenant Green, Colonel White, and so on.
- New Zealand's Rugby Union team is called the All Blacks, and other national sporting teams have followed their lead: the All Whites (soccer), Tall Blacks (Basketball), and Black Caps (Cricket). their netball team, the Silver Ferns, may also count.
- Cluedo (known as Clue in America) has all the main characters named after the colors of the pawns used in the older versions (Miss Scarlet, Mrs. White, Mrs. Peacock, Prof. Plum, Mr. or Rev. Green, and Col. Mustard). The victim's name is Dr. Black (though changed to Mr. Boddy in the American version). Extended versions and variations keep with the trend, naming characters after other colors. There was Miss Peach, Mme. Rose, M. Brunette, Capt. Brown, Inspector Brown, Rusty (also brown), Sgt. Gray, Mr. Slate-Gray, Lord Gray, Lady Lavender, Prince Azure, and Mrs. Meadow-Brook (blue-green), though of course (since some colors are repeated) they're not all used in the same variations.
- And in the French version: Dr. Lenoir (the victim), Dr./Rev. Olive (Rev. Green), Prof. Violet (Prof Plum), Mlle Rose (Miss Scarlet), Mme Leblanc (Mrs. White), Mme Pervenche (Mrs. Peacock)... And Col. Mustard, whose name was literally translated.
- The Yu-Gi-Oh! card game has the Dark World archetype, each of which has a name similar to that of a color. They all have the common tie in that their effects depend on being discarded from the player's hand by the opponent.
- Latinum: Platinum or white
- Goldd: Gold, or yellow.
- Siilva: Silver, or gray.
- Scarr: Scarlet, or red.
- Gren: Green.
- Renge: Orange.
- Zure: Azure, or blue.
- Beiige: Beige, or brown.
- Celuri: Cerulean, or cyan.
- Snoww: Snow, or white.
- Reign-Beaux: Rainbow. Incidentally, he's the strongest of the bunch.
- Grapha: Graphite or grey. He's stronger then Reign-Beaux.
- Most of the original Space Marine chapters in Warhammer 40,000 were named for their armour colours, only later developing personalities, traits, idiosyncracies and histories of their own. These being the Blood Angels (blood red), Flesh Tearers (dark red), Ultramarines (blue), Space Wolves (grey), Dark Angels (black), Whitescars (white), Silver Skulls (bright silver), Iron Hands (dark silver) and Rainbow Warriors (blue with a rainbow slash on the helmet).
- The first generation of Pokémon games have color-themed town names (playing the games on the SNES's Super Game Boy or through one of the Stadium games on the N64 yields a different color scheme for each town based on the name).
- The second generation games combine this with theme naming based on plants - for example, Ecruteak (teakwood and the color ecru), Cianwood (wood in general and cyan), and Mahogany (both a type of wood and a color derived from it).
- Red and Blue are the main characters of the original games. A character named Leaf (after "LeafGreen") was added in the remakes as it adds the ability to choose the PC's gender found in later games (storywise, she's pretty much just Red, but female). The sequels, Pokémon Gold and Silver, have Gold (later renamed Ethan), Kris, and Silver as main characters. It wasn't until after that generation that they stopped naming characters after colors.
- Two generations got color-named games - the others are named after valuable minerals, which also have homonymous colors (except Crystal and Diamond).
- All of the Seven Sages in Pokémon Black and White are named after colours of the rainbow... except for Ghetsis, who shares Musical Theme Naming (G-C#) with his son N.
- Cheren and Bianca, also from Black & White, complement each other in both personalities and names - Cheren is Slavic for black, Bianca is Italian for white.
- Hugh from Black 2 and White 2, whose name is derived from "hue".
- All of the main cast and some supporting characters from Croma Heroes has the name of a color. Even towns and other places follow the theme, such as Brush, Hue, Canvas, Inky mines and Watercolor Port.
- Phantom Brave examples include Ash, Walnut, Canary, Scarlet, and I'm fairly sure Marona, Castile and Sulphur count as well. Of course there are others.
- To specify, the characters are named after wood hues (though some just have normal colors as their names) Marona is derived from the french world from Maroon, Ash is synonymous with grey/black, Scarlet is a shade of red (and Sienna, a yellow-brown) and Canary (a one man Animal Wrongs Group) is named from Canary Yellow. Of cuse some don't match this pattern (Namely Raphael and Sprout). Other characters with color names include Chief Editor Indigo, Sienna's assistant, Murasaki (Japanese for purple). Marona's mother is Jasmine, and Walnut's real name is Faded.
- Most unique abilities for characters are also color themed. Marona's family has the ability "Chartreuse". Scarlet the Brave and Walnut have "Psycho Burgundy", Raphael's ability "Heliotrope" (Pink), Sprout's "Dark Eboreous" (Ebony), Flame's "Cobalt Blues", Fox's "Viridian Copper", Lierre's "Myosotis" (The color of forget-me-nots), and Drab's "Mega Crocus" (A color of lilies)
- In Touhou, Chen, Ran, and Yukari's names mean Orange, Indigo, and Violet respectively. Each name's color's position on the electromagnetic spectrum corresponds to its owner's power level with violet being the strongest and orange being the weakest.
- In Final Fantasy Tactics A2, you get to engage with the Cinquleur (from cinq couleurs, five colours in French), whose names are Ruuj (red), Bliu (blue), Verre (green), Nware (black), and Blanch (white), each representing their job class. Unfortunately the enemy sprite colors don't match the names.
- Both the Erusean Air Force and the Belkan Air Force from Ace Combat use colours for squadron names, though Belka uses the German versions. In an aversion of the Law of Chromatic Superiority, Yellow Squadron is Erusea's elite unit.
- Every major character in Gunstar Heroes is named after a color, with the exception of Pink's two sidekicks, as well as Smash Daisaku.
- RED and BLU of Team Fortress 2, natch (which doubles as Fun with Acronyms). Other fronts for the organizations seen in the in-game signage also follows this convention (such as Red Bread and Blue Corn in the Granary map), as do the names of their founders, Redmond and Blutarch Mann.
- The villains of Final Fantasy VII: Dirge of Cerberus are called Rosso (red) the Crimson, Azul (blue) the Cerulean, Shelke (amber) the Transparent, Nero (black) the Sable and Weiss (white) the Immaculate.
- Red and Blue, heroes of Treasure Hunter G, are members of an entire family of color-based names. Other characters are exempt from the theme, though.
- SaGa Frontier brings us twins Blue and Rouge, as well as Red, who seems to be an expy of the Treasure Hunter G character.
- All of the characters of VVVVVV are named after colors. For bonus points, all of their names also start with the letter "V" (Viridian, Vermilion, Violet, etc.; hence the game's title).
- The Path: All the girls' names are variations on "Red".
- Kingdom Hearts has a colourful music theme of the 'bell' type Heartless (Red Nocturne, Blue Rhapsody, Yellow Opera and Green Requiem in the first game and Kingdom Hearts: Chain of Memories; Crimson Jazz, Silver Rock, and Emerald Blues in Kingdom Hearts II).
- In Nazo No Murasamejo, the four lesser castles are named Aosame, Akasame, Ryokusame and Momosame, which respectively contain the Japanese words for blue, red, green and pink.
- The three high school friends from Jack French and the 7 Dwarfs: Michel Lebrun (French for "brown"), Sam Black and Will White.
- Kirby: Green Greens, Red Canyon, Orange Ocean, Purple Plants...the list goes on(maybe).
- Kirby and the Rainbow Curse features worlds that are named after the 7 colors of the rainbow. note
- The three siblings from Detana!! TwinBee are named after their respective colors: namely Light (Blue), Pastel (Pink) and Mint (Green).
- Solatorobo: The protagonist is named Red, while two antagonists who claim Red is related to them are named Blanck and Nero (White and Black).
- LiEat has Vermillion Town, Azure Town and Gold Town.
- In Runbow, the main characters are named after the HSV color space. The default male Player Character is named Hue, the Big Bad is named Satura(tion), and the default female player character is named Val(ue).
- Roughly half the characters in Exodus: Escape From Fort Bullwark are named after colors, from Carmine to Coral to Captain Bur-Gundy to the main character, Fuschia.
- RWBY: Word of God has confirmed that, with only one exception, all characters in the show are named according to specific rules that are linked to colour associations. The exception is Professor Ozpin. The main characters are especially noted for their colour associations and how their names are associated with those colours: Ruby is red-themed and is based on Little Red Riding Hood; Weiss Schnee is white-themed and is based on Snow White (her name is German for "White Snow"); Blake is black-themed and her name comes from an Old English word referring to someone with black hair; Yang is yellow-themed, based on Goldilocks and has a name connected to the light of the sun. The episode "Field Trip" reveals there was once a war where corrupt leaders tried to ban art and all other forms of expression. Parents started naming their children after colors in defiance. After the war, the tradition stuck.
- In the Sequential Art Webcomic, the squirrel sisters Scarlet, Amber, Jade and Violet. Though when written it's rather 5C4RL37, 4M83R, J4D3 and V10L37.
- College Roomies from Hell!!!: Michael Redford Green and his sister Blue.
- In Colour Wheel, all the named characters so far are named after their color scheme. Some are more blatant than others.
- In the (short-lived) WCI High, there was a trio of girls named Goldie, Sylvie, and Rusty.
- In +EV, the mother's name is Violet. Her first daughter is Scarlett, which is a shade of red. And violet is a mixture of red and blue. So it was logical to give their second daughter a name that's a shade of blue, and thus she was named... Ultramarine!
- In No Rest for the Wicked, Perrault remembers the red theme of Red's name.
- In Sinfest, the first two succubi to become actual characters are Fuschia and Baby Blue — whose hair and clothing are that color. Others of them have been given color nicknames by fans, and one, Sapphire, has been made official. Amber, a human, may have been inadvertent.
- Everyone in Pastel Defender Heliotrope.
- The Ménage ŕ 3 spinoff Sticky Dilly Buns features sisters Amber and Ruby, hitting this and Rock theme naming
- France Five, being a parody of Super Sentai, naturally follow the same format with its heroes: Red Fromage, Black Beaujolais, Blue Accordéon, Yellow Baguette, Pink à la mode.
- In We Are Our Avatars, the Original Character Orange continues the color theme of the Red Ribbon Army Color Theme as he's the brother of Capt. Yellow), but he's also named after a citrus fruit, as he's the rival of Lime.
- This is a very common way to designate mass transit lines. Different lines tend to have different colors on maps anyway, and simply calling them after their colors makes them easy to remember and less confusing to outsiders. Some examples:
- The Washington Metro has the Red, Yellow, Green, Blue, Orange, and Silver Lines.
- The Chicago L has the Red, Blue, Orange, Green, Purple, Pink, Brown, and Yellow Lines.
- The The T in Boston has Orange, Red, and Blue subway lines plus the Green Line, which is a subway/surface streetcar line, and the Silver Line, which is Bus Rapid Transit.
- The Los Angeles Metro Rail has Blue, Red, Purple, Green, and Gold Lines of varying characters. There are other lines that do not adhere to the theme, however, like the Expo Line.
- The New York Subway doesn't use color names, however, the color of a route's emblem is indicative of which trunk line that service uses in Manhattan. Specifically, red emblem routes use the IRT Broadway - Seventh Avenue Line, orange is for the IND Sixth Avenue Line, yellow is for the BMT Broadway Line, apple green is for the IRT Lexington Avenue Line, lime green is for the IND Crosstown Line, blue is for the IND Eighth Avenue Line, purple is for the IRT Flushing Line, light gray is used for the BMT Canarsie Line, and dark gray is used for shuttle services.
- The Twin Cities' mass transit system has light rail Green and Blue Lines, an operational Bus Rapid Transit Red Line, and an under-construction Bus Rapid Transit Orange Line.
- The Portland Trimet MAX transit system has Red, Orange, Yellow, Green, and Blue Lines.
- The Tyne and Wear Metro has two lines, Yellow and Green.
- Philadelphia's SEPTA lines have informal color designations, drawn from their coloration on the standard transit map: the rapid-transit Market-Frankford and Broad Street Lines are sometimes called the Blue and Orange Lines, respectively (although they are equally likely to be referred to by their abbreviations or other names), while the Subway-Surface Trolley Lines (streetcars/trams that run underground for much of their length but enter street-running or street-level running further away from Center City) are more frequently called the Green Lines, and sometimes so are SEPTA's other trolleys. However, the PATCO train to New Jersey is never called the "Red Line" even though it is so colored on the maps and uses a red motif in its public identity.