Lambotsavy,
I'm not sure about the red lenses on the Jalpa, but I know Robert told me the amber turn lenses used on the Euro Urracos differed slightly in shade from one Altissimo 'run' to the other necessitating replacement in pairs if your interested in show quality - which I think you are. Actually doesn't surprise me ...
If the same problem exists for the red lenses Robert would know. I bet you could send him the lens you want to replace for a good match ...
Regards,
Bryan
'74 P250S S/N 15622
Indianapolis Indiana USA
blissinindy@yahoo.com