I replaced the back plate for my Switch. I was anxious about how the spare part would look, but it's literally 100% the same as the original, inside and out.

It was definitely worth the trouble. The end result looks extremely satisfying compared to the scratched up back plate.
Now, the only issue left is that the digitizer in the front is scratched to shit. I applied 3 layers of some basic scratch remover but it barely did anything. I wonder if there's a stronger paste available. I'd rather not destroy my Switch replacing the digitizer.