Was the 1990/91 ever available with clear indicators from new, I was told Hella did them.
I don’t think they did, thought they changed to smoked for run out models.
Google GTi brochure, 1989 small bumper GTi is easy to find. You may be lucky and find an early big bumper brovhure.
If you mean the front ones it's possible it was just Edition Ones that had the clear front indicator lenses as standard, and it was orange for all else, but double check that!
Hella did do aftermarket clear or black front ones, but again without checking I think that was just for small bumper cars up to '89.
If you look I the OEM section theres a VW accessories catalog that includes clear lenses, so was available as a genuine optional extra.