Well looking at the roof scoop look's black, so I think you could get away with it myself. But as I said before not easy to match up as I'm doing with my roof scoop's now lol.
And look's load's better already, I see what you mean about the wheel's sort of look better now them sticker's have gone.
(Did I just say that) But I would still change them black, more so if your going with the black and silver look. I had my Focus black and silver looked nice with the window tint's added.