I am looking at getting a drop down electric screen. The one i am looking at is a 1:1 format one. I would modify the screen so its a 16:9 screen with a black border above this. The screen I want to drop down around 10" from the ceiling i.e. 10" back borner along top. i.e. From this... ...to.... What should I use to paint the screen without damaging it? Black Dye?