# Using color with braces employing the TikZ calligraphy library

Three cheers to Andrew Stacey for giving us the calligraphy TikZ library that allows for elegant calligraphic braces in TikZ (something I've wanted for ages but was afraid to ask) -- among many other things. Output looks like this:

which is produced with this code:

\documentclass[tikz,border=3mm]{standalone}

\usetikzlibrary{decorations.pathreplacing,calligraphy}

\begin{document}

\begin{tikzpicture}
\draw[red,decorate,decoration={calligraphic brace,amplitude=6pt},thick] (0,0) -- (0,3);
\end{tikzpicture}

\end{document}


Notice the red option to \draw, which seems to have no effect on the brace. I've tried all sorts of things (even pen colour=red which gives an error), but I can't seem to colorize the brace. Tried with both XeLaTeX and pdfLaTeX. Any suggestions?

pen colour works for me:

\documentclass[tikz,border=10pt,multi]{standalone}
\usetikzlibrary{decorations.pathreplacing,calligraphy}
\begin{document}
\begin{tikzpicture}
\draw[pen colour={red}, decorate, decoration={calligraphic brace, amplitude=6pt}, thick] (0,0) -- (0,3);
\end{tikzpicture}
\end{document}


• As it happens, the presence or absence of braces is not the issue. My error was in assuming that pen colour=red belonged in the \decoration={...} statement. It does not. Again, my bad. – sgmoye Jun 20 '16 at 13:19
• Yes, it is a little counter-intuitive. But it kind of makes sense because, if it was a regular brace decoration, your red outside decoration={} would change the colour. But actually, I just looked at the library's documentation :-). – cfr Jun 20 '16 at 15:07
• As did I. What indicated the behavior that makes this work? Just curious to know what I missed... – sgmoye Jun 20 '16 at 15:11
• @sgmoye I don't know if I have a good answer. pen colour seemed OK from the manual. It didn't like it inside decoration so the only other obvious place to try was really outside decoration. And I also did an example with a regular brace decoration, trying the colour inside and outside to see what gave an error and what worked, and then figured by analogy. The best thing I can really say is that I looked at the documentation and then ... er ... fiddled a little bit :-). – cfr Jun 20 '16 at 16:06
• No problem. I fiddle a lot myself -- apparently just not enough. – sgmoye Jun 20 '16 at 16:59