startshape S

background { hue 70 sat .1 b .5 }

rule S {

stem { hue 50 sat 1 b .75 }

}

rule stem {

SQUARE { }
stemRight { r -1 }

}

rule stem {

SQUARE { }
stemLeft { r .1 }

}

rule stemRight {

SQUARE { }
stemRight { hue .5 y 1 r -.5 s .98 }

}

rule stemRight 0.1 {

SQUARE { }
stemRight { y 1 r 20 s .75 }
stem { y 1 r -.5 s .99 }

}

rule stemLeft {

SQUARE { }
stemLeft { hue .5 y 1 r .5 s .98 }

}

rule stemLeft 0.1 {

SQUARE { }
stemLeft { y 1 r -20 s .75 }
stem { y 1 r .5 s .99 }

}