Each room was equipped to illumine itself at irregular intervals, but it was impossible to determine just when a room would flare into brightness. Caught in the act of lovemaking, a couple would suddenly find themselves tangled in a wash of silver, or gold, or red, yellow or green. Other couples, around, above and below, would be able to watch them from glass floors, walls, ceilings. Then the light would die—to spring on in another chamber.
This I feel was captured pretty well in the movie with the use of lights in the pleasure house that Logan and his partner run through.