Tired of raw harsh light bulbs at night in the Tomos dash. I decided to produce lenses. Still waiting on $50 of blue and amber filament to arrive to get the colors correct. The symbols dabbed with paint marker. You can use whatever color you like.
UV stable high temp translucent plastic. Not PLA.
Some interesting symbols would be cool. I would consider making them for other mopeds if a socket or dash is available for fitting.