The blue and green seen in this picture are actually the same color. 
[Image: bluegreenpink.gif]
Discover Magazine says, "our brain judges the color of an object by comparing it to surrounding colors."  If you zoom in and cut out all the other colors in the picture, it's true, they're the same.  This scares me, because I thought my brain was smarter than that.  It turns out it can be easily tricked.  (via Neatorama) #science