Optical Illusions & Auras

For the two images below, stare in the center.

Two things will happen: The color of the dots will change, and the dots will disappear.

ILLUSIONS AREN'T REALLY ILLUSIONS...IN THE TWO IMAGES ABOVE, WE ARE SEEING AURAS:

 Stare at the image below (at the white cross) for at least 30 seconds and then look at a white wall.

Below, stare at the red dot...when the image changes, it will be a black and white photo, but you will see it in color!