I was spraying Extreme Tire Shine on my tires after I washed my car the other day, and I decided to try it on my rocker panels. They are always a little dirty unless I hand scrub them. Anyway, the tire shine made them look great. Covered the dirt and gave it a very shiny clean appearance.

Just thought I would share.

 

The actual tire gel lasts a good week or so or until you wipe it off! Also back to black works well if they are starting to fade...

 

Yeah the tire gel is good too. I haven't tried it on the rockers yet though.
They aren't faded, but sometimes I put some back to black on them just to stop any fading that might be happening.