4

As is probably well known, footnote marks in beamer are colored using the footnote mark beamer-color, which seems to default to black, so that footnote marks are black even when the surrounding text has a different color. Example:

\documentclass{beamer}
\begin{document}
 \begin{frame}
  \color{red}some text\footnote{test} and some more text

  \color{green}some text\footnote{test} and some more text
 \end{frame}
\end{document}

which produces

example slide

What would be the cleanest way to change this so that footnote marks take on the color of the surrounding text? In this case I'd like the 1 in the main text to be red and the 2 in the next line to be blue, but without explicitly having to write those colors. The 1 and 2 in the footnotes themselves should likewise take on the color of footnote text, which in this case is black.

In particular, I'm not looking for this:

  {\setbeamercolor{footnote mark}{fg=red}
   \color{red}some text\footnote{test} and some more text
  }

because that would also change the color of the mark in the footnote, and also because I have situations in which it's not so easy to figure out what color the surrounding text actually is.

Undefining the color as suggested in this other question, with

  \setbeamercolor{footnote mark}{use=,parent=,fg=,bg=}

doesn't work either.

What's the cleanest way to make this happen?

An ideal solution would make footnote marks take on the surrounding text color by default but still respect \setbeamercolor{footnote mark}{...} if I set it explicitly. But for my current project, it will be acceptable if setting the footnote mark beamer-color has no effect.

6

Colour setting to . takes exactly this into effect:

enter image description here

\documentclass{beamer}% http://ctan.org/pkg/beamer
\setbeamercolor{footnote mark}{fg=.}
\begin{document}
\begin{frame}
  \color{red}some text\footnote{test} and some more text

  \color{green}some text\footnote{test} and some more text
\end{frame}
\end{document}

This is discussed in section 2.6.3 Using the current color (p 23) of the xcolor package documentation.

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