% replace this in the prologue
%
/layer {GS M1 3 -1 roll sub T % shift down the origin by current for loop index
1 0.5 Sk % go to new origin and distort x=1 y=0.5
0 0 6.4 cm 0 360 arc cc SRGB CP % define a circle
GS F GR % fill it with colour cc (and restore graphics context for re-use)
6 SL sc SRGB S % stroke its border with thickness 6
1 SL FTB FITS3 % draw the name logo (with thickness 1)
GR} BD
%
% replace this in the body after the rectangle fill
%
/fc {1 0.5 0} D /pc {0 0 0} D /cc {1 1 0} D /sc {0 1 1} D
100 -20 0 {layer} for