(y .(t ..(checker ...(vdivide ....(hue-from-rgb .....(vcos ......(lightness-from-rgb .......(v+ ........(vdivide [1.9061 2.9712 0.4764] [0.6857 1.3599 -0.1209]) 2.6739)))) ....(length [-2.6948 1.583])) splasma)))