(turbulate .(theta ..(gradient [1.5444 -1.7262 1.9424])) .(height-normal ..(max-component ...(vabs ....(adjust-hsl .....(sigmoid ......(t .......(saturation-from-rgb grain))) .....(polar ......(red-from-hsl .......(adjust-hsl pos [-2.9721 -1.9867 2.1049]))))))))