Stare at the dot for 30 seconds. Then, without moving your eyes, move the mouse over the image.
It will look like it is full color until you move your eyes.
I made the photo in Xiamen. Made a negative and a greyscale version. When staring at the negative version, and suddenly switch to the grey version, the grey version becomes full color positive.
Wow! moet de vertaling naar de app nog zoeken (welke gameplay vraagt om 20 seconden naar punt in midden staren?), maar zeker impressive!
gerjon