This thing uses a semi-genetic algorithm to generate and draw pixels.
There are sliders to change params. They can also be set in the url hash.
pixelsize: The size of each pixel, in, uh, pixels. Default: 6
alpha: Transparency of rendered pixels. Default: 0.1
colormutationrate: How often color mutations should occur. Default: 0.1
colormutationanount: Maximum size of color component mutation. Default: 90 (color components are 0-255)
positionmutationrate: How often position mutations should occur. Default: 0.1
positionmutationamount: Maximum size of position component mutation. Default: 30
followcursor: How much the pixels should tend toward the cursor. Default: 0
bw: Set to
trueto render all non-mutated pixels in black and white. Default: false