I think they produce "accessories" as well, like reflectors and covers and heat sinks and similar stuff. Something like
this might work, although it's obviously not black, like the thing MC has on his helmet (is there any reference showing that those really are lights, by the way?).
Also, ripping apart flashlights to get the whole Luxeons-heatsink-optics package is what thorssoli has done for his Mark VIs. Apparently made his life easier. Not sure about what he did with the heat though - that is always going to be a problem, unless you cut down on the brightness.