If you can't see anything above this text then you will need the shockwave plug-in to continue.
Its pretty simple. Use the up and down arrows at the top of the applet to change color palettes.
Press the "rand() palette" button to randomize the palette.
Press the "rand() params" button to randomize the parameters.
Press "generate!" to generate a design.
When you are bored with that particular generated design hit the "reset" button. Repeat as necessary.