Change the variable to change the size of the dots. Click somewhere to set the center of the color, and put your mouse somewhere else and press space to make it start (the place where you press space is the place where the lines of darkness radiate from). Then watch! It's especially interesting if you change the variable. Note: The smaller the variable, the clearer it will be, although the slower to fill the whole screen it will be. Clearer may not be what you want though :) cc027 thought of the name.
