(v* .(red-from-hsl ..(length ...(vfrac ....(x .....(vsqrt ......(x spots)))))) .(max-component ..(checker ...(vfrac ....(vsqrt .....(y ......(blue-from-hsl .......(adjust-hsl ........(polar [-1.0548 -2.7357]) ........(y blotches)))))) pos)))