Re: Rear difusers finally!
Man... making a mountain out of a mole-hill. Do them yourself and you would have already had them on. As you said, they are a low risk item.
Buy a few Scotch scuff pads, some degreaser (etc), spray etching primer or epoxy primer and some Dupli-color black spray paint. And then some clear if you like.
Why would they need to wait for a black car? I would have laughed and walked out.
James