%%
%% The LaTeX Companion, 3ed
%%
%% Example 6-5-2 on page I-467 in "Color in tables".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.0pt}
%StartShownPreambleCommands
\usepackage{colortbl}
%StopShownPreambleCommands

\begin{document}
\begin{tabular}
    {>{\columncolor{blue}\color{white}\bfseries}lr}
\rowcolor[gray]{0.8}
    \color{black} Day & \bfseries Attendance\\[2pt]
Monday&    57 \\  Tuesday&   11 \\
Wednesday& 96 \\  Thursday& 122 \\
Friday&   210 \\  Saturday& 198 \\
Sunday&    40 \\
\cellcolor[gray]{0.8}\color{black}Total& 724
\end{tabular}
\end{document}

.
