%PS%
  % 71 lpi
63.2456  71.5651           %cyan
{abs exch abs 2 copy add 1 gt
  {1 sub dup mul exch 1 sub dup mul add 1 sub}
  {dup mul exch dup mul add 1 exch sub}
  ifelse}
63.2456  18.4349  2 index  %magenta
66.6667  0        2 index  %yellow
70.7107  45       2 index  %black
setcolorscreen
/PE where {pop PE}if