XTACY,

As far as changing the color - I can't help.

However, I believe the residue you have is from tape that they used in shipping these cars. A lot of the inventory reduction cars that sat for a few years have this residue (mine included). The tape adhesive just backed onto the panels - bummer, but part of the deal I suppose.

I haven't tried to remove mine yet, but will probably attempt it later.

You could always get the carbon fiber coating on that center piece near the door handle...

SQ