Only color that ever held up was black. Once the plastic was exposed to UV rays, it broke down very quickly. The other colors of plastic trim tend to fade and turn to chalk. Nothing can be done when that happens except to clean and re-dye the plastic. That only really makes it look ok at 10 feet. Plastic technology has improved leaps and bounds in the last several years and dash pads and the like are no longer prone to drying out and cracking like they did in the past. There are some good repro interior parts available but they usually only come in black now and you just dye them to the color you need. That is how it has been done since the original plastic pieces were discontinued many, many years ago. SEM is one of the most recommended brands and there are others.