Am buying some sunnies, and need to know, Which brand sunnies are plain black anddddd have a positive offset, I know king do a variation which has a red line around the rim, CSA's version is plain, anymore, also, noob question, why does everyone only have centre caps on the 2 front wheels and not the rear, In photos marketing the sunnies I've seen they have a silver centre on front and rear wheels, however in every pic I've seen people only seem to have the front 2 wheels with the centre caps.... . . cheers