whch body kit

i am having trouble deciding which body kit to got

i am trying to decide between the

onderground sport
F/X design
Diza Hurricane

also what color should i paint my car after?
and my grandfather said if i change the rims on my car it will through off the speedometer and shit like that.. is that true?

I like the f/x design the best, but the diza looks great as well... I would paint the car a nice dark blue with silver flakes in it. As for the speedometer thing, as long as you figure out the right size of tire it won't throw it off. I think there is a tire size calculator on here but i can't find it.