Recolors!
I've been using this recently on some of my own profiles and did some relatively drastic recolors/edits, so I thought I'd post them here to show the kinds of things you can do with this design:
Milo (turquoise, rust, gold) Jack (dark gray, red, purple) Steven (army green, navy, khaki) Billy (gray, shades of melon/berry)
(posted 9/17/14; those links may have different profiles if I redesign them in the future, who knows!)