One trick I found is if you remove the little rust spots you have a choice as to what to do then with the spot. Some folks like to leave it a bare metal spot, others like to try and paint match it. If you want to try and paint match it fingernail polish is the way to go. It can be found in just about any color you might want, and is a pretty damned protective coat. otherwise just clear coat your metal spot so the rust doesn't come right back.