I added the smoke reflectors to my sapphire black M235 today.
I had difficulty because the paint for the bumper was actually attached to the reflector in some places... also the paint seemed to be making the holes the new reflector snaps into smaller than necessary. This might be a side effect that this is a new bumper after an unfortunate accident with someone that ran a red light back in November.
Anyway, the good news it that they look great. Combined with the black kidney grills, and this is really something (IMO).