Black Line-X doesn't get hot in the sun, Rhino lining does. Seriously, the black paint of my truck is too hot to touch on a summer day but the lining is no problem at all. 2000 chevy with Line-X, been very durable with just minor scratches from extremely heavy stuff drug across it. I would do the Line-X again.
Most creative Line-X application I saw was on a racing Kart body panels when I used to race, great application for it there and it matched the rest of his KArt as it was tinted green when applied.