Download: http://archive.info-mac.org/game/camouflage-10.hqx
A nifty desk accessory type program that demonstrates the limitations of
the eye's ability to distinguish the edges of shapes against a chaotic
background. Shapes move around while you hold the space bar, but when
you let go they disappear, fading into the overall pattern.
Info-Mac
The original online Mac user community. Bringing Mac users together since 1984.