Auto body repair & detailing: volvo bumper, volvo 850 glt, kiwi shoe polish

Question
I have a volvo 850 glt wagon. The dark gray trim on the bumpers and side body guards are discolored, taking on a light gray look with streaks and spots etc. I've been told armorall is useless for this problem, salesman suggested kiwi shoe polish which helped, but I wonder if there is something on the market that would be better. Thanks for yur help.

Answer
Go to a professional auto parts store, like NAPA or Big A, and ask to talk to the paint professional. There is very likely an aerosol paint available tat will closely match the color of your bumpers. Use mineral spirits to clean off any armor all or wax that may be on the cover before painting it. bill