I have used silicone tire dressing on my window seals to keep them soft and dark. Put it on heavy but not dripping, let it soak in for a while then wipe off so it doesn't run. THEN wash the truck to remove any stray silicone on the paint but lay off the rubber parts. Dry the plastic parts, and wipe well with rubbing alcohol and let air dry. I painted all my plastic trim gloss black using Rustoleum's high performance enamel in the tall silver can, and it has been surprisingly durable, even on plastic step/running board, with an occasional touch-up. I have been VERY pleased not to have to constantly dress my truck and my black trim POPS ! I decided I like the sleek look of body color door handles so I alcohol prepped then painted them and my tailgate handle with DupliColor matching paint. I'm very pleased... Save Tire Wet for the tires!!!