I recently used "Mother's Black Again" on my bumpers to restore them to a much better condition. They are dark-grey/black again and uniform in color. I tried it on the black trim piece above the license plate on the tailgate, but it didn't seem to do any good. I didn't try it on the door handles since it looks like the same material. Any suggests? Now that the bumbers and other door trim is dark again, the light grey (faded?) door handles look even worse. :(