(polar .(green-from-hsl ..(t ...(blue-from-hsl ....(vpow .....(green-from-hsl ......(theta .......(sigmoid [2.8293 -0.5016 -2.6339]))) .....(sigmoid ......(normalize .......(vdivide ........(vmin pos vsnoise) ........(sigmoid [2.1384 -1.9081 -1.6895])))))))))