After a fun ride on Space Mountain, it is always fun to ride along the conveyor belts and see the futuristic scenary. After passing several scenes involving planets and robots, you come to a part where the belt begins to travel upwards. It is here you pass several televisions which feature guests as they travel along the belt. If you notice, the back wall there is green, making for a green screen. If you are wearing green on your shirt, it will appear as a hole on the television screen! This last trip, my son was wearing a t-shirt that included green and he was delighted to see that his shirt was see through in that spot! On your next trip to ride Space Mountain, be sure to wear a green shirt so you can see the effect on the televisions.