I like the OEM HyperSilver color, think it looks great. Mine are a graphite gray with machined faces.. If they ever start to chip/flake in the future, would probably do the same thing you are - media blast them down and repaint in silver
The only time I really like black wheels is on a white car, then I think the contrast looks great
I do have a white FX, and I am not a fan of black wheels in general. I don't think you get the full effect of the wheel design, everything kind of gets lost in the blackness haha I don't know how to explain it.

