"Let's see. Purple. For your hair. Can't tell this is a goddamn anime."
—Da Vinci, Ghost Stories
Wouldn't you wonder if your "great sword teacher" looked like some psycho-cyberpunk with green hair?
— Kendo Rage manual
Once there was a boy who woke up with blue hair
To him, it was a joy—until he ran out into the warm air
He thought of how his friends would come to see
Would they laugh—or, had he got some strange disease?
— Crash Test Dummies, "God Shuffled His Feet"
So what is this? Super Saiyan with blue hair dye?
— Freeza, Dragon Ball Z: Resurrection F
His hair color is merely manga artistic expression. He is fully Japanese.
Beat: Whatchu want, Pinky?
Uzuki: Hey, leave my hair out of this.
"It would explain the white hair."
''(later) "It's great we know the truth, Lincoln. But we still haven't solved the mystery of your white hair."
—Clyde McBride, The Loud House, "Not a Loud"
"C'mon, blue hair, my swampers *and* raincoat?"
Coraline Jones, Coraline
"Hair, blue, shoes, sensible."
—Marge Simpson,The Simpsons, "Marge Gamer"
Tommy Pickles: "And that's why I don't likes my purple hair no mores."
Chuckie Finster: "Don't worry, Tommy, there's nothing wrong with your hair being purple."
"Gah! The white hair!"
—Lincoln Loud, The Loud House, "Not a Loud"