you must do this!

http://www.strangecosmos.com/images/content/112134.gif


1. Follow the movement of the rotating pink dot, you will only see one
color, pink.

2. Green Catastrophe: If you stare at the black + in the center, the
moving dot turns to green.

3. Reality Shatter: Now, concentrate on the black + in the center of
the picture. After a short period of time, many if not all of the pink
dots will slowly disappear, and you may only see a green dot rotating.

courtesy of my natasha (who i learn from every day)