%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-2-18 on page I-308 in "Customization keys for typesetting".
%%
%% 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{135.0pt}

%StartShownPreambleCommands
\usepackage{color,fancyvrb}
%StopShownPreambleCommands

\begin{document}
\renewcommand\FancyVerbFormatLine[1]{\colorbox{green}{#1}}
\begin{Verbatim}
Some verbatim lines with
a background color.
\end{Verbatim}
\renewcommand\FancyVerbFormatLine[1]
      {\colorbox{yellow}%
                {\makebox[\linewidth][l]{\color{blue}#1}}}
\begin{Verbatim}
Colored verbatim lines
(background & foreground).
\end{Verbatim}
\end{document}