You can also use RIT clothing dye to change the color of your covers. It is best to start with the ones Fender sells (white ones). There are other brands that work but also some that don't work quite as well. The Fender ones are easy to find.
Just mix the dye per directions, including a little salt, then get the water hot but not boiling. Hold the covers with a paper clip through the screw hole and dunk them in frequently pulling them out until the color is what you want. Don't let the covers rest on the bottom of the pot! Meltdown!
It can be useful to first immerse the covers in warm water for a minute or so before dying. Then after dying rinse them in warm water for a few seconds. The dye can be stored in a sealed glass jar for a while if you have more projects to do later. Each dye pack only cost about $1. They have a good color selection and it can be a fun project. The color won't come off and scratches won't show through.