[Chromy]

The backlighting is less bright in person, and of course is defeatable. Not to argue with your perfectly valid opinion, but here is some more info on why I'm attempting to do this...

The problem is that with digital projection, there is a lot of lumen output from the projector but the contrast ratio isn't that great. While this room is COMPLETELY light sealed and will get pitch black, watching a movie can be abusive to the eyes without some type of ambient lighting. The overhead lights worked to a certain extent, but are incandecent (and thus reddish/orangish) and do wash out the screen a bit due to the light source being in front of the screen. A light source behind the screen is optimal, because it has the longest path to get back to the screen again (bounce off the back wall).