This probably won't help much, but one of the european sites on contour.org, I remember seeing a spray-on taillight tint. Just spray it on to tint it up.
P.S. My tour hit the 150,000 mile mark this morning!
1995 Contour LX, KIA w/ 156,264 miles. The memory will always live on..... Replaced by a 1999 Toyota Solara SLE.....