A couple of my hard used mountain bikes are gray. On fast descents knobby tires pick up rocks and sling them at the frame, knocking out chips of paint, and also crashes now and then add their scrapes.

The gray bikes look so much better after many miles than my blue one, which looks like a worn consoomer product. Planned obsolescence encouraging you to buy a new one?

Otherwise why not just clear anodize aluminum frames? Since we're talking about cars, some bodies are aluminum, like Ford F-150s, mail trucks, and old Land Rovers. Why not clear anodize those? It would be like having a stainless Cybertruck except lighter.

> Anodizing is a method for changing the surface chemistry of metals and other substrates. It protects against corrosion, enhances aesthetic qualities, resists scratching and is one of the most durable surface finishes available.