You can clean and smooth the surface (remove all glue and foam) and then apply the linex with a roller if you can't spray it. As for color you can get different color pigment bottles and make the color you want. It's what I'm gonna do after I repair the gutter. No more headliner over here!I've been wondering about that! Everything go smoothly? My issue is how much Line X wants to do a small job like that. Anything besides bed liner black is big $$$. I was considering doing the whole thing since my gel coat is on its way out...
The 3M spray glue is complete garbage! It will never dry and always be sticky! I know, I do automotive upholstery!