(checker .(normalize ..(saturation-from-rgb ...(max-component [2.3695 -0.3781 -0.3973]))) .(vfrac ..(radius ...(red-from-hsl ....(hsl-from-rgb .....(rgb-from-hsl ......(lerp .......(height-normal ........(vfrac 0.9523)) .......(v* blotches pos) .......(hue-from-rgb ........(rgb-from-hsl [1.201 -2.9134 -1.9451 -1.1071])))))))))