I have an '85 300TD with very shabby looking plastic headlight "doors" (USA style). Rather than buy replacements, I am tempted to try to paint these to match the color of the rest of the bodywork (#199: Black Pearl, recently redone by previous owner), but I can't locate the proper color in spray cans. The dealers in this area only have the tiny bottles with brushes for rock chips, etc.; PartShop says they can't ship spray cans, but that I should be able to get it at NAPA; NAPA, AutoZone, etc., etc., etc., all say they don't have any listing for such old Mercedes colors. HELP!!!