Just an update on my center lower brake light..... I stripped it with the Citrus-strip, and was pretty pleased with the results! I did have some slight lightening inside and outside, even though I was conservative with the length of time that the cleaner stayed on the plastic. But, I polished it out with some automotive finish compound and cloth. For the more difficult inside, I used a tooth brush to strip, and then the same finish polish to clean up and polish the inside of the lense.

Next up will be the upper center light!
P. S. I appreciate the encouragement and advice, because I probably wouldn't have had the nerve to try stripping plastic without the support of this forum, and ..... I Thank You!