# Specifying Colors Per Page

Using the leaflet package, I am trying to create a flyer for a document. I have specified the background color NavyBlue for pages 1, 2, 4, and 5. Unfortunately, the default text color, black, is difficult to read on that background. To fix that, I would like to use the color, white. However, I must only use that color on pages 1, 2, 4, and 5. It would not show up on the other, white pages. How can I accomplish this in LaTeX?

Below is a sample file:

\documentclass[letterpaper]{leaflet}
\usepackage[dvipsnames]{xcolor}
\usepackage{blindtext}

\title{Sample Document}
\author{Anonymous}
\date{\today}

\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}

\begin{document}
\maketitle

\Blinddocument

\end{document}


tcolorbox package can apply different options to each fragment from a broken box. Then it's possible to include all text from the leaflet inside a breakable, blankest tcolorbox (blankest doesn't change paragraph format) and as every fragment is identified with a particular number, we can use it to fix the color of the text.

\documentclass[letterpaper]{leaflet}
\usepackage[dvipsnames]{xcolor}
\usepackage{blindtext}
\usepackage[most]{tcolorbox}
\title{Sample Document}
\author{Anonymous}
\date{\today}

\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}
\put(0,0){\textcolor{NavyBlue}{\rule{\paperwidth}{\paperheight}}}}

\begin{document}

% White color for title is forced.
{\color{white}\maketitle}

% A breakable blankest colorbox with an extras option which is evaluated
% on each fragment identified by a \thetcolorboxnumber
\begin{tcolorbox}[breakable, blankest,
code={\newcommand{\mytextcolor}{%
\ifnum\thetcolorboxnumber=3 black%
\else\ifnum\thetcolorboxnumber=6 black%
\else white\fi\fi}},
extras = {colupper=\mytextcolor}
]
\Blinddocument
\end{tcolorbox}

\end{document}


• This is a very clever solution! :-) Sep 22, 2016 at 6:14
• @ThomasF.Sturm Nice to hear it! By the way, is this the correct way of using code and extras? Sep 22, 2016 at 6:44
• Yes, I think so. Sep 22, 2016 at 6:51