Not really sure why you would paint the high beam housing black (which will severely reduce light out put) other than for looks. But to each his own, still looks good.
For those looking to do a quad projector set up a little tip to get better light out put that would resemble actual high beams instead of normal projectors with a cut off. Disassemble the projector it self and remove the shroud inside which gives the light cut off, this will allow the full light of the HID to come out of the projector. I will note that constantly turning HID's on and off (using them as highs) will shorten the life of them drastically.