Quoted from QuarterGrabber:That's a good idea but I don't think there is enough clearance under the glass.
Depends on the game.. Some have elevated aprons some don't. I think most have room to modify or create a new apron that has a bezel around each of the score and instruction cards, that you could incorporate leds in that would illuminate the cards. However, each manufacturer has a different apron so you would have to make several different models.