« Reply #3 on: April 21, 2014, 08:40:20 am »
I have always fought to get the orange or red back. Unless the lens is coated with lacquer or painted it will be within the structure of the plastic and as suggested I think it is effectively aged plastic. Experience shows that is brittle. I have cleaned out lenses with Acetone but it is a nasty chemical and it will attack the plastic if left to soak. That was converting KR200 sidelights from navigation lights.
3D computer printing?

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