(average 
.(lightness-from-rgb 
..(scale 
...(z 
....(y pos)) 
...(t 
....(vpow 
.....(blue-from-hsl 
......(lightness-from-rgb 
.......(height-normal [-2.404 -0.0096]))) 
.....(alpha vsplasma))))) 
.(vabs 
..(v+ 
...(gradient 
....(vmin blotches 
.....(vabs 
......(checker 
.......(hsl-from-rgb pos) -1.5616)))) 
...(vfloor 
....(green-from-hsl [0.7758 0.374])))) 
.(vfrac 
..(vmin 
...(height-normal [0.2019 1.0646 -1.2101 -0.8092]) 
...(blue-from-hsl 
....(length pos)))))