But line-x doesn't warranty against fading or discoloration, only against chips or flaking. I was also considering this, but would want to go with white, and I'm not sure how bad the liner material would stain from the usual road-grime. IE: if I hit a patch of fresh asphalt and a few black specks sat on the white line-x for a few days, would it leave a brownish stain? That would be worse than the rock chips. Is there any company that warraties against this? I would think if there was a way they could add something to make the material less porous it would work great. Maybe that's why most people go with gray instead of white on the white trucks?