If they have changed colour over time, it possibly due to poor quality material used in their construction. Replacement is the only corrective action if you want colour uniformity.
Are there any decent after market ones? Not necessarily cheaper… I know GRP in America do some but I’m not sure I like the look. Or is it better to stay original
I spent some time thinking about this and ended up buying some decent soldering ‘third hand’s’, lighting, smd tweezers and magnification to go with my existing hot rework station and proceeded to replace all my LEDS.
Looks much better. I’ve offered this led service to other lotus owners and replaced LEDS (and some resistors that had blown due to water ingress) I’ve done about 8 lights thus far.