Since those rims are painted and not a bare metal like polished aluminum, you will have to treat them just like you would any other painted surface. What you should do totally depends on how bad the scratch is. I scratched my rim not too long after I got my Fast. I hit a huge pothole and the rim snagged the edge just right and put a small gouge on the lip. It pissed me off but I'm just gonna live with it. It's not worth getting fixed since you really have to look for it to notice it.
If you really want to get it repaired I can recommend a guy that does really good work with rims.
If you really want to get it repaired I can recommend a guy that does really good work with rims.