Motion obscures awareness of color changes

"Here, we show that objects changing in hue, luminance, size, or shape appear to stop changing when they move." 

If you focus your eyes on the center of the video, you can see the dots on the periphery change color, but when the ring of dots begin to rotate, their changing of color becomes less apparent - a phenomenon referred to as motion-induced silencing.

From the Department of Psychology at Harvard University, as reported in the abstract at Current Biology, via Neatorama.