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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
I don't believe there's any special coating - it's just a (reasonably hard) glass on there (not plastic).
If you search for "removing scratches from glass" or similar there are a few options. As mentioned toothpaste should work for very mild scratches but it's not a very powerful abrasive so will take a long time.
I think for deep scratches you may be able to find something that will actually fill the scratch up.