*Hey, cute graphics hack.
"String Augmented Reality for Unity3D can detect the natural color values returned from the markers it detects. This data can be used to manipulate your augmented scene in real-time to further enhance realism by making your scene's overall color matches the actual tone of light color in the real world.
"For an untouched picture taken from this example running on and iPad 2 look here:"
http://yfrog.com/h44d09p