OEM Mud Flap Woes

Removed OEM mud flaps recently and was surprised with some rust and paint wear. How would I go about preventing further issues with the rust and some type of paint correction here. Any input is much appreciated.

 

I have a friend here (in NorCal), he owns "DentPro" or at least a franchise. He told me that he frequently does minor color matching touch up on bumpers and body damaged areas he removed dents from. Possibly call around and see if any of the Dent Pro or other dent removal companies can handle that, I've seen my friends work, he handles dealers and resale companies and is always busy so he must be good at it. Anyway, I hope this helps.

BTW I have a cement Tundra also, and I'm going to pull my mud flaps off and check for damage