I just upgraded to the latest beta in order to see if that would fix my header styling issue. Compiling gave me the following error: ! Argument of \pgfutil@context@parse@gray has an extra }. This is defined in: tex\texmf-modules\tex\generic\pgf\utilities\pgfutil-context.def If I change the code to the following (basically just comment out the call to \pgfutil@context@parse@gray) then my document will compile again. That's about my debugging limit - I shall stare at the code a bit more to see if inspiration strikes. % The cmyk part is from Joseph Wright. % See tex.stackexchange.com/questions/27952/cmyk-context-colors-in-tikz \def\pgfutil@registercolor#1{% \edef\pgf@temp{\PDFcolor{#1}}% \edef\pgf@marshal{\noexpand\pgfutil@in@{g}{\pgf@temp}}% \pgf@marshal %\ifpgfutil@in@ %\expandafter\pgfutil@context@parse@gray\pgf@temp\pgf@stop{#1}% %\else \edef\pgf@marshal{\noexpand\pgfutil@in@{rg}{\pgf@temp}}% \pgf@marshal \ifpgfutil@in@ \expandafter\pgfutil@context@parse@rgb\pgf@temp\pgf@stop{#1}% \else \edef\pgf@marshal{\noexpand\pgfutil@in@{k}{\pgf@temp}}% \pgf@marshal \ifpgfutil@in@ \expandafter\pgfutil@context@parse@cmyk\pgf@temp\pgf@stop{#1}% \else \PackageError{pgf}{Color #1 has an unsupported color model.}{}% \pgfutil@definecolor{#1}{gray}{0}% \fi \fi %\fi } Regards, Felix