I took the photos below from James Turrell’s website to show you what the exhibit was like since you weren’t allowed to photograph in there. You entered the rather large room and it felt like being inside of a tube TV but painted completely white. Bright colored lights came from the back of the room (just on the other side of the wall as you go up the steps) and from the other end of the room that you could not go to (what felt like the front of the TV). So some of of the light changes were non-eventful but when the color changed to green, my son and wife had this purple aura to them. I really want to learn more about what was causing my eyes to perceive the light that way.