Had the wheels of my new Z4 coupe refurbished and powder coated from the black they were when I bought them. Great job done by The Wheel Specialist. I know it's a franchise, but still they were really helpful and very pleased with the job they did for me. Went for Black Chrome.
OLD
NEW
The main reason I'm not a fan of black wheels is it's hard to see what wheels they actually are - it seems even more of a waste on the more special rims like 226s, etc. IMHO.