What should I do if I scratch the plastic shell of Robin 3 chassis?

I scraped the plastic shell of Robin 3. The shell can be replaced or a protective film can be attached. The specific operation is as follows:

1. Stick a special protective film for notebook computer on the surface of the shell to cover scratches.

2, don't like the film, which side of the shell has scratches, replace one side of the shell, it takes some money, but after the replacement. You can be perfect as always.