well, i've always thought the amber/yellow lights on the 123 are pretty ugly; euro lights look a lot better in my opinion, but i've never been able to afford euros. This car really inspired me to fix up my car a little bit:
I'm going for a look far more refined from some kid with a honda civic and clear lenses he got from pep boys, i wanted to add a cleaner look to my headlights. The 116 and 107, two of my other favorite mercedeses, have clear fogs, which i think look a whole lot better than the amber 123 ones.
By the way, i dont have racing lights or those ugly lexus is300 lights or anything - i just put on clear side markers (like the one in the picture) and clear fogs from an older 123 (i think most 240d's had them).