%% 
%%  A DANTE-Edition example
%% 
%%  Example 07-03-1 on page 90.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks,multido}

\begin{document}
\begin{pspicture}(-3,-3)(3,3)
\psset{unit=2}%
\multido{\rHue=0.01+0.01}{100}{%
  \pscircle[linewidth=0.01,
    linecolor={[hsb]{\rHue,1,1}}]{\rHue}}
\end{pspicture}
\end{document}