(gradient .(dot ..(vpow ...(vfrac ....(vabs 0.1043)) ...(height-normal ....(y .....(vabs noise)))) ..(red-from-hsl ...(height ....(gradient .....(square ......(vdivide .......(vmax [-1.0608 -2.7718 -0.849] pos) .......(length ........(vconcat blotches blotches)))))))))