I would be scared of getting the non-OEM black grills as they could look terrible in the flesh. There are some awful looking cheapo grills out there.
Last: 330cd Sport - Silver Grey, 335d M Sport Coupe, F10 535d M Sport.
Current: AW F21 M135i, Coral Red, Pro Nav, Vis, HK, & Clunky Adaptive Suspension
Current: X5 XDrive 35d M Sport - Black Sapphire, lots of toys.