Well, for some younger players, it's harder to make pretty colors like brown, peach, etc. When I first joined I remembered having the worst trouble with it, so I made either really color-clashing browns, or black and white characters. (I'm loads better now, but I can sympathize.)
And heck, sometimes people just are not too good with 'art', or making good color combinations. I know several people who are quite good at writing and other things, but they... just aren't too good with colors/making their makings look original.
I'm sure it's simple for maybe you guys to make a character, but other people sometimes just can't.