I dont know the correct name for the parts Im about to speak on, but they are on the windows, where the front and rear doors meet up at. Mine at one time were obviously black, but the Arizona sun has since anodyzed them, and the paint/stain has gone away to reval metal. How do you fix this? Also, the grayish plastic moldings around my front and rear bumpers are sun faded. Anyone know of a trick to fix this as well? Ive tried the shoe polish trick, and it actually made it worse....

Your best bet for the windows would be to paint them if all the paint has gone and its showing metal.
Being only a small area to paint you could sand it back and do it your self with a spray can.

As for the bumper....sorry

I just picked up my 94 blue G20t and noticed that most of the paint on the top of the front and back bumpers are almost gone completely. Are the 94+ G20's have color coded bumpers?