Gamzee from Homestuck.
Taste the rainbow
Based off of this image: [link]
I've always liked the character designs of the Trolls from Homestuck.
I can honestly say that I actually haven't really read Homestuck at all. I've read Act I and didn't get any further...so yeah. But i did read the wikia.
I'll post a few more of this and that's it.
White, Black, Red, Green Kryolan Liquid Body Paint
Gray, Blue, Yellow, Dark Blue, Violet Ben Nye Body Paint
And new addition KURLOZ: