Well, then, Welcome to Gaia! biggrin Yes, sadly, you loose your original hair. Before this I had a short crop of brown, and before that I had purple silken hair. I lost them. I'd have to buy them again to re-get them. A lot of the female Jokers are having your hair but green. Looks great on their avatars!
You're doing a fantastic job already! You've got the key elements! I actually have two versions of the Joker. The one I am now (the "default"wink, and, yes, I have a Nurse Outfit for him. I run around towns like that just for kicks. If you need help, I can lend a hand!