Hmm..Again depends on the character but I guess I'll go with blonde because of characters like Ed,Al (FMA),Tama-chan from Ouran and characters like them but it depends on personality.

well right now its orange because i love ichigo kurosaki^^

most of my favorite male characters got blonde and black hair like tamaki suou, wolfram von bielefeld, fai d flourite, keiichi shimizu, kurapika, hei, Lawliet, roy mustang ,etc..
that's wy i chose Blonde. :3

Most hot anime guys are blonde, like Tamaki or Usui...
The only white hair guy I think is hot is Toshiro... Orange is ok, but I lo ve it on Ichigo. Black is cool, because guys like sebastian have it..

Black, blonde, and white are tied.

Black!Most of my fav characters are having black hair like Sebastian Michealis,Gray Fullbuster,Uruyu Ishida,Roy Mustang.

white, black and blue!!

I think purple, white, and blue are the coolest hair colors

I'm going to say that I don't exactly like anime boys, so I'll apply my answer to anime girls, just to be annoying. @Hiraite, Toshirou's hair is actually silver, not white, though it is an easy mistake to make... Sorry, if I'm nit-picking a bit, but I like Toshiro, one of my more well-liked Bleach characters. XD

White black and blonde have to be my favorites. I don't think I click with brown at all its too bland