Personally, I think you need to figure out which direction you want to go, and do it. Having silver, gloss black, matte black, chrome, etc all on the car makes the matte look like primer, not an accent piece.

I would either paint this body color (correctly) and stay with the black on the strakes and handles as well, or else, go back to silver on the WS surrounds. I am just giving my $0.02 since you asked, but I have customized quite a few dark cars in my time and IMHO they have turned out pretty well