Context Free Art - 10
derived from http://www.contextfreeart.org/gallery/view.php?id=2165 & http://www.contextfreeart.org/gallery/view.php?id=256

Variation: LZW
startshape main
size {s 1 1}
rule main {
20 * {h 18} aa {a -1 b .7 sat .3}
}
rule aa {
CIRCLE {}
aa {a .00001 r 12 x .1 s .999}
}
rule aa {
CIRCLE {}
aa {a .00001 r 11 x .2 s .999}
}