I am working on a ’72 Dart project. The package tray behind the rear seat is in great shape except for the fading. It’s made of a cardboard type of material and looks to have been painted or dyed from the factory. The restoration catalogs have reproductions but there is nothing wrong with the original except apperance. I would rather restore than to just slap on a new piece. Do you have a product that would put a new finish on this part?