[BigV]

that is pretty cool

I found that I could make the image appear in the correct color after staring at the dot while the inverted colors were displayed. I also found that I could make the black and white image return by shifting my focus point. But I also found that I could return my focus to the black dot and see it in the correct color again. the moves have to be pretty quick and direct, not moving over the screen much. It's like your retina becomes... "stretched" in a particular color direction and takes a little while to return to it's regular state. While it's "stretched" that image lasts for a few seconds, but the colors only map to the image while the tonal values also match, ie, aligned with the focus on the dot.

Really, you can pick any point on the image and do the same thing, there's nothing super special about the dot except it helps you anchor your focus on one tight spot, rather than fuzzing up the image on your retina.