(gradient .(min-component ..(sigmoid ...(average ....(min-component .....(vfrac ......(length .......(blue-from-hsl ........(vmin [-2.2958 -0.6618 1.7769 0.6994] -2.4483))))) ....(average .....(sigmoid 0.891) .....(average ......(vsin .......(square wood)) ......(normalize .......(radius [-0.9727 1.228]))))))))