As far as the lights, yes, that’s a good option. I was going to use an acrylic sheet covered with a diffuser film, test the lights, and see how far away they need to be. I found a website where this person made backlit movie poster frames using strip lights and they looked amazing. They used reflective HVAC tape to line a 4” deep box, taped the lights in rows about 3” apart inside the box, and then just used a cheap store bought poster frame as the front. Painted the boxes and mounted them on the walls in their home-theatre. Really looked cool. I’ll look into those acrylic covered rails, though. Thanks for that.
OneSixthFigures