Update
This is definitely one of those little projects that end up taking 3 times longer than anticipated.
After I removed the Bed Rug to see what kind of scratches I had left over from the old plastic liner, I was amazed to find several areas that needed to be touched up. The worst areas were from the topper door, but there were several smaller ones in the bed.
I sanded down the areas, sprayed some primer, and then went over it with Rustoleum Professional Enamel in Red. Its a very close match for the truck and for the truck bed, it was fine.
For the bed rails, I taped them off and sprayed them with the actual 3L5 Radiant Red. I used a system that allows you to mix the paint with the hardener and then attach the mix to a pre loaded aerosol sprayer. It worked really well.
Finally, I used the Trimbrite tape to line the edges. I think it looks great. It's not abrasive at all, but it does have texture to it. The corners by the tailgate were the hardest, but my fiance helped me out with those.
I will post up some pics of it tomorrow, but it was definitely a low cost solution to adding protection from paint chips to the bed rails.