Brian (sp?),
Hey bro, its Ameen... from the ISP meet.
If you go with the gunmetal color for your car... choose a gunmetal colored wheel. I'm telling you, when you match graphite/greyish metalic cars with the wheels it comes out baller as hell... My goose looked amazing with the body color matched to the paint. When I put my black wheels on it it looked played out...
Any one of those colors will look good with black...
The best b13 example that I can think of is Nathan's Car...
Here is my old car w/ the powdercoated rims done by Brennan.