How do you get rid of yellow paint on a bumper of a grey car?

I backed into a yellow parking bar at a park, and it got the bumper on the left side. I want to try something before I go to a body shop.|||Try some Methyl-Ethyl Keytone. You can buy at your local hardware or paint store.|||you can try sanding it with a fine sand paper,prime it then spray it with a colour match.|||use some polishing compound. you can buy it at an auto parts store. The directions for use are similar to wax. If you have lots of thick yellow paint, you might try scraping some off first.|||Polishing compound and a wet sponge. Then wax.