This is a very very cool illusion!! I still couldnt make my mom blv this!! Damn this is awesome! For ppl who dont know what this is....would u ever blv that the backgorund the square B and square A are the same color??? U would call me crazy 4 saying dat...coz B has a white backgorund and A has a black background...damn its hard 2 blv....to make sure just copy the image and paste it in Paint. Then take a piece out of the BACKGROUND of B and take it near A's BACKGROUND n see 4 ya self!! I still cant figure out this!!!