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Films — Live-Action
- In the TRON universe, vehicles change to the color of whatever program is piloting it. Also, programs that are reprogrammed (or deprogrammed) may change color. The page picture is Flynn invoking the trope in order to pass himself off as a Mook. note
- In an early draft of Star Wars, lightsabers worked like this.
- In Erfworld, raiment has similar properties. It changes color and even symbol depending on who a unit serves. So when Wanda uncroacks or Decrypts a unit, its raiment immediately changes to her or Parson's symbol.
- Magic weapons in Goblins are explicitly said to glow with the aura color of their wielder and change depending on who is wielding them.
- In Paperboy, when a house cancels its subscription (because of your incompetence), its paint suddenly turns gray and metal skulls appear on its fenceposts.
- The security bots in BioShock change from red-light to green-light when you hack them. Likewise, Big Daddies' helmet lights will turn green when hypnotized and red when aggro'd.
- The sequel's multiplayer uses red, white, and blue in a similar way; red machines have been hacked by the enemy team, and blue ones by your own. White is unhacked (vending machines) or inactive (turrets).
- When buildings are captured in Command & Conquer games (or when soldiers are mind-controlled), they change to the color of the team that captured them. Garrisonable Structures also get instant sandbags, flags, and color-coded paint jobs.
- In Dune II, when an Ordos Deviator tank hits an opposing unit and put it under Ordos control, the unit's color changes to Ordos green.
- Gears of War: The light on guns change to either blue or red depending upon which side picks them up.
- StarCraft has it for mind-controlled units in the Brood War extension, but averts it for "rescuable" units in missions (usually heroes).
- The sequel also does this, with the color of mind controlled units changing to the controller's side as long as they are being controlled.
- Campaign or custom map triggers that change unit control will also change the color accordingly. E.g. One early mission has you bring your hero unit to a beacon, which sets off a script to turn the whole base to your control, along with a new paint job.
- Though not universally true, Fire Emblem characters will often switch their outfits to blue instead of green (NPC) or red (enemy) upon joining the player's army.
- In The Legend of Zelda: Spirit Tracks, Phantoms being controlled by Zelda turn pink.
- El Shaddai: Ascension of the Metatron has the weapons change color from black to white as soon as you steal (and purify) them from enemies.
- In Star Wars: Battlefront, any command posts you/the enemy captures will change colour.
- At one point in Transformers: War for Cybertron, an Autobot Brute picks up the hammer weapon dropped by the Decepticon Brute he just killed. The weapon immediately switches from the purple-tinted Decepticon version to the red-tinted Autobot version of the same weapon.
- In Shin Megami Tensei III: Nocturne, the main characters tattoo's will change color from blue to red when health is critically low.
- In Ben 10: Alien Force, Albedo is an alien who created a knockoff Omnitrix that has synced with Ben's, rendering him stuck with Ben's normal human form as his default. Eventually, the two Omnitrixes react to each other, and Albedo becomes a color-inverted Ben - dark hair becomes white, green clothes become red. Eventually, he creates another, better one called the Ultimatrix. It's red, like his jacket. So is the flash created when Albedo transforms with it. Then Ben gets it... and when he puts it on, it becomes green, as is the flash when he transforms with it.
- In Code Lyoko, Ulrich's katana usually glows blue when striking or parrying, but in the hand of a XANA-controlled warrior (like a polymorphic clone, a brainwashed Aelita, or William), it glows red instead.
- The laser guns of G.I. Joe: A Real American Hero have beams Color-Coded for Your Convenience, good guys and bad guys having different-colored laser blasts. Infamously, in one episode, a Cobra weapon is picked up and used by a Joe, and the color of its fire changed to match its user. It is joked by fans that the guns have a "good" and "evil" setting.
- When gems in Steven Universe fuse, their gemstones change color to match their fused forms palette, despite not otherwise shapeshifting like the rest of their bodies.
- The franchise has many, many, maaaany characters over the years get a repaint from a powerup, sometimes temporary and sometimes permanent, because it lets them sell the same toy again.
- In Transformers Animated, when Mixmaster and Scrapper change their allegiance to the Decepticons, their optics go from yellow to red, as Autobots have blue eyes and Decepticons have red ones. They also go from the yellow and gray colors of the vehicles they were made from to the bright green and purple of the G1 Constructicons.
- A male gorilla develops a patch of silver fur on his back upon reaching adulthood. Hence the term "silverback" for a gorilla troop's patriarch, who's quite easy to pick out from the rest of the troop by virtue of being Colour-Coded for Your Convenience.