I have carbon black X6M50d with BMW Performance grilles, side skirts, rear lip spoiler and rear window slats. I have also fitted road legal (UK) flyeyeskit black tinted rear light film. With the winter wheels on (satin black) it looks truly evil....
A pic of the grilles (dark now and car filthy so this will have to do!).......
BEFORE
AFTER
And with the LED Adaptive lights on :-)