This wound up on the back burner for a while, but I finally got back around to it. The black stripe is 1/16" tape from the roll there, applied to the shiny under-layer. It wasn't that hard to apply, using the screw holes as guides. It's not awfully sticky, but should hold up well sandwiched between the clear pickguard and the body. You can get that tape at Hobby Lobby. I finished the pickup 'routs' with hand files.