Go for the new GTO yellow it looks hot ,or black but i know from exp. black is a b--ch to keep clean and from spending a lot of time in texas is hot as h-ll to climb into after sitting for a while.
Yeah, black is a pain to keep clean but it sure looks nice when it's all glossed up. Silver is also a nice color since it's relatively easy to keep clean and still looks good.
Oh yeah, as TexasGP said, if you paint it, make sure the door jambs and underhood, etc. get painted as well. Otherwise you'll open the door or hood and see that old color.