How to fix wheel scratch

It's not that big but I'd love to get it fixed. What is usually done to fix such scratches? Is that something I can do with touch up paint and if so where can I get the appropriate touch up paint to match the silver wheel color?
I need to stop getting so upset over scratches I can only see when I'm only a few inches from the car...
Like someone said a while ago, if you can't see it from 5 feet away, it does not exist



