Union Jack

Union Jack is an Illusion content by Paul Neave. It's wasn't cached on Wayback Machine, and therefore was lost.

Union Jack
According to the Illusion menu frame source, It is an After-Image illusion. The users have to stare at the flag for 10 or 20 seconds, and then clicking the flag to dissapear. Once it dissapears, The users can see the normal color of the flag in their retina.