If your eyes follow the movement of the rotating pink dot, the dots will remain only one color, Pink.

However if you stare at the black + in the center, the moving dot turns to green.
Now, concentrate on the black + in the center of the picture. After a short period, all the pink dots will slowly disappear, and you will only see only a single green dot rotating.
There really is no green dot, and the pink ones really don't disappear.
Weird...
However if you stare at the black + in the center, the moving dot turns to green.
Now, concentrate on the black + in the center of the picture. After a short period, all the pink dots will slowly disappear, and you will only see only a single green dot rotating.
There really is no green dot, and the pink ones really don't disappear.
Weird...