Ok. It's called Rustoleum "road warrior" bed liner. Comes in a kit that includes: Bed liner, hardner, roller, brush, mixing bit (for drill), scuff pad, and a few more things... I forget.
First: tape off the line you want and tape off plastic bits you don't want painted.
Second: use the scuff pad on the area you are wanting to paint. Kiss your clear coat goodbye.
Third: mix the bed liner and the hardner together. Follow the instructions to the letter!
You only have a certain time window.
4. Get to it! Use the roller on the large area and the brush in the tighter spots (dabbing motion)
Two coats are recommended
5. Pull the tape off after second coat is done. Not a good idea to let it dry In there
6. Pull up a chair, grab a beer, and watch paint dry. Doesn't take long to dry. The finish is nice and textured
We will be doing his roof, and maybe his entire rig soon