Well my instant reaction will always be black. Stuffy art teacher types will cry 'it's not a colour, it's a shade!', but I don't count myself among those sorts, so black it is. In this, I went for purple, however.
Depends on what it is. You know I love Red Hair. But my favorite color by itself is Pink. Second favorite is probably purple. Then Red. Blue. Green. Not to say that the distance between the colors is very far, either. I really like Grassy green and a kind of whiter green. But if I can buy my shit in Pink, I will. haha.