(v- .(lightness-from-rgb ..(vsin ...(vfrac ....(theta .....(vpow pos [1.3321 -2.4243 -2.2731 1.2361]))))) .(rgb-from-hsl ..(vsin ...(rgb-from-hsl ....(min-component .....(red-from-hsl ......(adjust-hue .......(alpha ........(lightness-from-rgb grain)) .......(hue-from-rgb ........(vmod snoise -1.5765)))))))))