Text color of toc and bibliography in the page header,

Question

thank you for existing. Things are easier with solutions from here. But sometimes it is not enough (for me).

I'm using a modified book class. The page header are changed in color with the following command.

\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \color{title}#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \color{title}#1}}

This does not work for the table of contents and the bibliography. Also the following seems not to have an effect

\newcommand*\setheader[1]{\markboth{\color{title}#1}{\color{title}#1}}

So the question is: what is the command for the toc and the references?

Thanks for everything in advance! If I haven't searched properly enough I'm already sorry.Cheers, Robert

Here is some code. It's not real minimal and not nice, but it does the trick.

\documentclass{book}
\usepackage{lipsum}
\RequirePackage[english]{babel}
\RequirePackage{chapterbib}
\RequirePackage{fancyhdr}
\RequirePackage{titletoc}
\RequirePackage{xcolor}   

%% The style for titles is small caps.
\def\titlefont{\rmfamily}
\def\titleshape{\scshape}
\def\titlestyle{\titlefont\titleshape\bfseries}
\def\headerstyle{\titlefont\titleshape\bfseries}

%% colors
\definecolor{tudelft-cyan}{cmyk}{1,0,0,0}
\colorlet{title}{tudelft-cyan}

%% Fancy style for the main matter.
\fancypagestyle{mainmatter}{%
\fancyhf{}
    %% Page numbers on the top left and top right.
    \fancyhead[LE]{\titlefont\thepage}
    \fancyhead[RO]{\titlefont\thepage}
    %% Chapter name on the left (even) page.
    \fancyhead[RE]{\titlefont\titleshape\nouppercase{\leftmark}}
    %% Section name on the right (odd) page.
    \fancyhead[LO]{\titlefont\titleshape\nouppercase{\rightmark}}
}

%% The mainmatter style is default for normal pages.
\pagestyle{mainmatter}

%% Print the current chapter and section at the top of the page in cyan.
\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \color{title}#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \color{title}#1}}

%% The setheader command can be used to print the title of unnumbered chapters in the page header.
\newcommand*\setheader[1]{\markboth{\color{title}#1}{\color{title}#1}}


\begin{document}

\tableofcontents

\chapter{Chapter}
\section{Section}
\subsection{Subsection}
\lipsum
\lipsum
\lipsum[1-2]
\begin{thebibliography}{}
\end{thebibliography}

\chapter{Chapter}
\section{Section}
\subsection{Subsection}
\lipsum

\end{document}

Answer 1

As mentioned in the comments, you have to patch the original class commands using package etoolbox. Pathcing the list of figures and tables and the index can be done in a similar way. I defined a helper macro which is now shared by all elements having something to do with the header. This makes it much more easy to change the appearance by having the color in one centralized location defined.

Please be aware that writing up an own class can be very complicated and time consuming if you want it to be bulletproof. Right now your code is doing the job (as you said yourself), but it isn't very pretty. Please consider to use a dtx file to comment your code in a more verbose matter and later strip down the code, giving you a nice and clean cls file.

Another tipp, have a look at the KOMA-classes. They are improvements over the standard classes and proide command like \addchap making an unnumbered chapter including a TOC-entry, setting the header and doing some minor stuff an author might forget keeping the document more consistent.

Either way, you should work with helper macros as i did with titlecolor.

Instead of chapterbib i would suggest to use the modern and flexible biblatex.

\documentclass{book}
\RequirePackage[english]{babel}
\RequirePackage{chapterbib}
\RequirePackage{xspace}
\RequirePackage{fancyhdr}
\RequirePackage{titletoc}
\RequirePackage{xcolor}   

%% The style for titles is small caps.
\def\titlefont{\rmfamily}
\def\titleshape{\scshape}
%\def\titleshape{\scshape\color{title}}%Deciding to have the whole thing
%colored would be much easier
\def\titlestyle{\titlefont\titleshape\bfseries}
\def\headerstyle{\titlefont\titleshape\bfseries}

% colors
\definecolor{tudelft-cyan}{cmyk}{1,0,0,0}
\colorlet{title}{tudelft-cyan}

%% Fancy style for the main matter.
\fancypagestyle{mainmatter}{%
\fancyhf{}
    %% Page numbers on the top left and top right.
    \fancyhead[LE]{\titlefont\thepage}
    \fancyhead[RO]{\titlefont\thepage}
    %% Chapter name on the left (even) page.
    \fancyhead[RE]{\titlefont\titleshape\nouppercase{\leftmark}}
    %% Section name on the right (odd) page.
    \fancyhead[LO]{\titlefont\titleshape\nouppercase{\rightmark}}
}

%% The mainmatter style is default for normal pages.
\pagestyle{mainmatter}

\newcommand{\titlecolor}{\color{title}}
\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \titlecolor#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \titlecolor#1}}
\newcommand*\setheader[1]{\markboth{\titlecolor#1}{\titlecolor#1}}
%Now all share the same helper macro `titlecolor` making it easier to maintain. 

\usepackage{blindtext}
\usepackage{etoolbox}
\patchcmd{\tableofcontents}{%
    {\MakeUppercase\contentsname}{\MakeUppercase\contentsname}%
}{
{\titlecolor\MakeUppercase\contentsname}{\titlecolor\MakeUppercase\contentsname}%
}
{}{}

\patchcmd{\thebibliography}{%
    {\MakeUppercase\bibname}{\MakeUppercase\bibname}%
}{
{\titlecolor\MakeUppercase\bibname}{\titlecolor\MakeUppercase\bibname}%
}
{}{}

\usepackage{pgffor}
\begin{document}

\tableofcontents

\foreach \n in {1,...,12} \blinddocument;
\cite{aristotle:physics}
\bibliographystyle{plain}
\bibliography{biblatex-examples}
\cleardoublepage\null

\end{document}