Originally Posted by swamp2
You may know this but it sounds like you don't from your post. Those black 19s are camouflaged so to keep them a bit hidden before production. The likely finish is probably something like the 19s for the E46 M3, polished with black "insides". I think they are going to look killer. Perhaps no need for afermarket wheels, especially if they are forged and reasonably light.
They will most likely be painted silver like the M5 wheels, IMO. Black would be a cool option on certain exterior colors.