(rotate 
.(adjust-hsl 
..(t 
...(green-from-hsl 
....(vsin 
.....(rgb-from-hsl 
......(gradient 
.......(vfrac 
........(vcos 
.........(vmod wood 
..........(vfrac pos))))))))) 
..(vmod 
...(y 
....(x 
.....(height 
......(rgb-from-hsl 
.......(alpha [-1.2889 -1.8975]))))) 
...(sigmoid 
....(saturation-from-rgb [2.875 -2.5606])))) 
.(vpow velvet 
..(x 
...(rotate 
....(theta 
.....(polar 
......(normalize pos))) 
....(polar 1.199)))))