ConicGradientFilling
ConicGradientFilling[{col1,col2,…,coln}] is a two-dimensional graphics directive specifying that faces of polygons and other filled graphics objects are to be drawn using a progressive transition between colors coli along a circle.
ConicGradientFilling[{θ1,θ2,…,θn}->{col1,col2,…,coln}] uses the colors coli at angles θi.
ConicGradientFilling[{θ1,θ2,…,θn}->{col1,col2,…,coln},{x,y}] rotates from the center point {x,y}.
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