Sorry it took me so long to get back to this thread. I used regular black electrical tape and placed it around the outside of the window.I then used it as a guide for the 3M " 1/4" fine line tape" Once the 3M tape was on,I removed the electrical tape,masked the rest of the window,scuffed the area with 600 grit and painted it.
As for the black screws,they are nylon and I got them from McMaster Carr.
They were like $10 for a box of 100! They worked GREAT! The nylon is much easier on the fiberglass threads than stainless so I don't think I will need inserts.I have taken some of them out numerous times and the threads still look perfect.