GMC cluster indicator color filters

[Andice]

I think they become curved as they deteriorate. Mine were flat on the '64 and mostly missing on the '66 parts truck. What was left of one lens on the parts truck was curvy and very brittle. I had thought of using a Brother label maker along with clear/black labeling tape for the lenses. This particular label maker will print mirror images so the label can be placed on the inside of the lens.