The yellow/red was a European spec lens. On European cars the front markers were white and yellow go fiquire.
When the day finally comes where we can post nice pictures, Most have seen the gtjoey LOTUS ELAN set up......
Its a huge improvement IMHO.
It combines the reverse light in the lens as well, eliminating the after thought reverse lights on the series 2 cars........
Some day.......some day.....
Your box of goodies, someone picked them up, it wasn't uncommon in the 70's/80's to swap tyhem if yours were broken, remember, BLG was broke, it wasn't till many years later the repro market came into play. All the major parts suppliers on this forum remake the US lenses, I think.
Good luck.