lower the contrast a little bit, it sorta makes the car look a little unreal.
what you dont wanna do is make it any color that youd see a grand prix, a grand am, or any other pontiac in cuz then people will relate it to that.
hot pink would look nice
the electric blue also looks really nice
you could also try lime green if youre into those colors
if you want, i bet fire engine/ferrari red would look pretty nice but i know alotta pontiacs come in that color
my favorite would be that purple/blue that switches colors from diff angles