Illusion of Colour...

[ameerat42]

I came across the first image link on an MSN forum, and searched for a more original source.
The closest so far is in the second link.

Link 1: Click and stare
To see that only the grid is in colour, use the likes of the color-picker tool in Photoshop on the other "colours"

Link 2: Others
and this.
Happy Hallucinating...