Best Optical Illusion I Have Ever Seen

http://www.youtube.com/watch?v=7knnO4vKgXgendofvid[starttext]I promise this isnt a scare video. Just keep focusing on the dot. And if you dont get the illusion, watch it again, without looking at the dot.

"The second picture was grey the entire time and your mind just put all those colors there."[endtext]