I read on one of the MB forums/mail-lists about using chrome tape (Autozone, Pep Boys) and burnishing/trimming it carefully on reflector surface to cover the yellow. The guy who wrote it spent a lot of time to do it. I can't remember where I saw the article.
The Golden Rule
1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)