(hsl-from-rgb 
.(vcos 
..(adjust-hue 
...(vmax 
....(sigmoid 
.....(red-from-hsl vturbulence)) 
....(vmod 
.....(vif 
......(vsqrt snoise) [-1.5091 0.406 0.2002 2.0886] 
......(theta 
.......(scale pos [-1.5426 2.8717]))) 
.....(max-component 
......(max-component 
.......(square 
........(polar pos)))))) 
...(z 
....(radius pos)))))