Ok. Some instructions first... 1. Allow your eyes to follow the movement of the rotating pink dot, you will only see one color, pink. 2. If you stare at the black + in the center, the moving dot turns to green. 3. Now, concentrate on the black + in the center of the picture. After a short period of time, all the pink dots will slowly disappear, and you will only see a green dot rotating. Not recommended while pi$$ed. Enjoy!