Here are few sites you might want to look at. The first site has the "old school" logo ( San Diego ). the second site has the NBA logo in every color. If you want want to look like an NBA player that is the way to go. The third site has an array of merchandise including Clipper logo wristbands and "old school" headbands. I couldn't find anything in the headband with the current logo. It's funny that they have the wrist bands but not the headbands. Anyway, this should help you to stop wearing NFL gear.lol
I would go with the red NBA logo headband a la Elton Brand.
3) http://www.thefind.com/query.php?qS=usr&query=los+angeles+clippers+log o+headband