i voted for white. black is alright, but i don't think it would look as nice on your car. i think white rims on a white car can look good if done right. gunmetal is so-so. white would just set it off better in my opinion.
hey im going for those rims too...they seem cool...and ive thought about this question for a while...i voted gun metal for a white car...bud id consider goin white and powdercoating over it...somethin custom..
see, if it were a black or darker car, it'd get my vote too (possibly). it's white, though. black would go too unnoticed on a white car. it'll make them look like steelies.
OK change my gunmetal vote....get white...and PAINT THEM YOURSELF...put some gradeschool artwork on it with a paint brush and then seal it... =] ..white makes a good base color