I've got Gunmetal Prodrive P1 17s on a black WRX. It looks very nice. I'd take a picture - but I've got the stock rims with snow tires on for the winter. My windows are also tinted very dark, I like the look, whole car is dark. I wasn't sure if I was going to like it, but it looks good.
yea i used to have a 98 civic with white rims PITA!! dirty alllllll the time! so my brother in law painted them for me and they were a little darker than gunmetal. i had tinted windows and i really liked it. i just wanted to see if there might be other colors that i might be more interested in. but i do like that stealth look with all dark mods.