(blue-from-hsl 
.(vpow 
..(vpow [-1.8198 1.8428 2.6592 -1.4717] 
...(vmin 
....(hsl-from-rgb [0.6932 2.6221]) 
....(v- 
.....(v- 
......(adjust-hue 
.......(saturation-from-rgb 
........(lightness-from-rgb [2.7787 -0.9325])) 
.......(vsqrt pos)) 
......(gradient clouds)) 
.....(dot 
......(vround 
.......(normalize wood)) 
......(polar pos))))) 
..(sigmoid 
...(gradient 
....(offset 
.....(x pos) [-2.0714 -2.3027 -1.4834 0.0131])))))