Since they're only available in silver and black, staying in silver stock color would be better.
I know replica zcp wheels come in gunmetal. Some people "may" think yours is replica if gunmetal powder coated.
X5M: Dinan Exhaust | Dinan Suspension | Velos Tune | BMW Perfomance Splitter | Lux V4 | Euro Mirrors | H&R 12/25 mm Spacers | IND Cosmetic Package
PAST: 08 E90 M3 | 08 E92 335i | 03.5 E46 M3 | 99 E36 M3