I went hog wild and embraced my Extra side.
The top half is iridescent and the bottom half is a pink/purple/blue Ombre. No regrets.
I have a HUGE thing for characters with multicolored hair; whether it be a gradient, or split down the middle, two colors, seven colors, whatever.
I wanna see some designs with multicolred hair!! If there's a reason they have multicolored hair, tell me about it too!
My main OC Adara dyed part of her hair black to be edgy™ but she didn't want to dye all of it since she liked her blonde hair too
I have a lot of characters with two or more colors in their hair but tbh they kind of have a lot of old art, so here's Unidentified Flying Strawberry and to a lesser extent Arosine too since he usually has two colors in his hair. For Strawberry, his hair is natural as most dragons are very colorful. Arosine probably dyes his... maybe.
I have quite a few of these, but I picked Katsu because he is my pastel child. He's a pastel dragon, so his hair just takes that appearance when in a humanoid form.
Honourable Mentions:
Fenrir is also to note here having tri-coloured hair (blue, black and white!)
Tamika is probably the most interesting though, having an actual justification behind her dyed hair in universe and ooc! In universe, her mother is a very controlling aristocrat who's the kind to lecture her on not having a feminine enough performance, and grill her for her grades not being up to par. She's hid several things in staunch rebellion to her - such as the dragon tattoo on her arm and the fact she works as an assassin for the Dragon's Fang. Exhausted from this rigid family atmosphere and some in-universe events, she ran from home. It was here that she cut and dyed her hair, using it as a symbol of starting anew - as her mother would have punished her for daring to choose such a look, as the daughter of an aristocrat.
Out of universe, her dyed hair look was inspired off of a dear friend of mine who always rocks it with tri-coloured hair looks! Her hairstyle is not the same, but i stole one of the colours (blue) because I felt like Tamika would absolutely dig her fashion choices and wish she could adopt it as her own.
Chit here has white "hair" with black tips! There's no real reason he keeps it that way. He just thinks it looks cool lol!