Looks like he used clear, I used it on a few parts(was tired of black all over me, I'm a slob! ) but never saw anything like that, got half a inner fender left over outside in clear, will check it this spring & see how it has weathered, I like the stuff, but did have a few problems now & then!
used it on the outter well & drop offs, clear first & after welding a coat of black, so far no sticking problems, been about 2 years since I put them on. Rich.