%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 11-3-13 on page 746.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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.
%% 

\documentclass{ttctexagray}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.83385pt}
\StartShownPreambleCommands
\usepackage{colortbl}
\StopShownPreambleCommands
\begin{document}
\newcommand\panel[1]{\multicolumn{1}%
             {>{\columncolor{magenta}}#1}}
\begin{tabular}{lrr}
  \large\textbf{Table title}\\[2mm]
  \textbf{Description}
          & \textbf{Column 1}
             & \textbf{Column 2}\\[1mm]
  Row one & mmmmm & mmmm \\
  Row two &  mmmm & mmm  \\
  \panel{l}{Row three}
          & \panel{r}{mmmmm}
             & \panel{r}{mmmmm} \\
  Row four& mmmmm & mmmm  \\ \cline{2-3}
  Totals  & mmmmm & mmmmm
\end{tabular}
\end{document}