Love it! ... And I was curious if your sig location of "Bergen County" was in NJ... so your plates show ... I'm down on the beach, with a similar M6 coupe, few mods here and there. I am thinking of doing something similar with my wheels. Out of curiousity, can I ask where you got the powdercoating done and what they charged (PM me the details if you care to share).
Also, what percentage of Tint do you have on the windows?
As others have said, I was worried about the contrast issue. I think a centercap helps, but I was thinking of leaving the rim edge (not that our cars have a lip per-say, but basically the lip) in clear-coat or chrome then darken the the rest in a gloss black.
Either way, they did a great job and brought request to fruition.