Another no vote from me. As others have said, so much wheel detail is lost and I don't think having car/wheel colour the same works for a lot of colours, black especially. I love the contrast of silver on black, so that would get my vote.
Bucking the trend I say yay...especially if you get the side reflectors and front fog lights done. That said, I had a black 1er coupe and always had silver. Guess I wasn't 'Gangsta' enough.