http://www.dump.com/2009/10/25/stare-at-the-dot/
all you have to do is stare at the dot until the bar reaches the end.
and for a quick second you'll notice the picture in full colors what its supposed to be. Honestly there is no scaring at the end of the bar so b are with it. its kinda cool to be honest, you can look at the colours for awhile, just dont blink or move your eyes, cause once you do it goes back to black and white