The original interior quarter trim panels (the upholstered parts) on my May Metuchen Sprint were cut by a previous owner so they could install speakers in the panels. I've been looking for a good used set of replacements, and found a set on Ebay, but the plastic appears to be black - while the plastic on mine is kind of a white translucent material. Then I got to looking at other pictures on the web and they appear to be black as well. Yet mine are white. Any explanation? Was this a plant/time specific thing?