I recently found a product that works amazing on literally any surface. It is in a white bottle and I can't recall the name, but honestly it makes any material look brand new. It is rather expensive I believe at like $15 for a bottle with a spray head, but I get it for free from work so it is nice. I find use for it between waxing periods when the paint loses some of its glossiness but at the point where I'm too lazy to wax again. But i spray it on the paint, trim, and even windows; it applies much like wax in how it dries hazy then wipes off and leaves paint deep and rich in color, trim deep black, and windows lose any haziness. I have used it on my old original shift boot and just soaked it in the stuff and it came out literally like new, it is plush and soft. I know I should have waited to know the name of the stuff, but whatevz. I recently did my entire car with the stuff before showing my car to another E30 guy near me and he was amazed at how good the paint and trim looked, it  takes my old and faded valances and makes them nice and rich in color again. Good stuff guys.