I know there are several posts about various replacement bumper fillers, but I wanted to know if anyone has had success refinishing the facatory originals? I have an 18,000 mile car with the originals on it, but they are starting to fade. It seems that I can polish them to look nice and after a week they become "chalky" and faded again. They are still very flexible as the car spends most of its life in the garage. I just wanted to know if anyone has had any luck refinishing their originals. I realize most people have to replace them because they become brittle and crack. Any info is greatly appreciated. Thanks in advance.