(vsin 
.(vfrac 
..(square 
...(adjust-hue 
....(green-from-hsl 
.....(v- 
......(turbulate 
.......(turbulate 
........(vround -0.641) [-1.101 1.1987 2.4029 -2.7444]) [0.2303 -2.2603 -0.935]) pos)) 
....(sigmoid 
.....(green-from-hsl 
......(v- 
.......(vmin 
........(turbulate 
.........(vround -0.641) 
.........(blue-from-hsl 
..........(saturation-from-rgb 
...........(vcos 
............(y 
.............(square 
..............(height 
...............(hue-from-rgb pos)))))))) [0.2303 -2.2603 -0.935]) pos)))))))