# Adding color to the footnote mark in Beamer

I'd like to change the color of a footnote, both the text and the mark in a presentation I'm preparing using beamer. The example I give below works in article but not in beamer...any ideas why not?

%\documentclass{article} %works.
\documentclass{beamer}   %does not work.
\usepackage{color}
\renewcommand{\thefootnote}{\color{red}\fnsymbol{footnote}}
\begin{document}
\begin{frame}
Thus we expand every part of the solution, $u, U, V$, and $\lambda$
as an asymptotic series\footnote{\color{red}This is
actually a lie\ldots but don't tell anyone}:
\end{frame}
\end{document}
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