Scratched Voyager Key- easy to fix?

I accidentally scratched one of my black keys (don’t ask, I’m a moron). I was wondering if this was easy to fix, if so, where can I find a replacement key and what procedure(s) should I take? Thanks

Is it very deep? If not, you can buy plastic polish which brings up old keys very well and will work on this.

Here’s some:

http://cgi.ebay.co.uk/Xerapol-Plastic-Polish-50g_W0QQitemZ8008400497QQcategoryZ9946QQrdZ1QQcmdZViewItem

It’s got to be worth a try first?

No, it’s more like a shallow gouge…

bump