beamer: Change Footnote Color

Question

• I have a beamer presentation with a complex color scheme.
• In order to improve readability I need to change the color of the footnote.
• Problem is, that I need to change the color for each "part" (see screenshot) of a footnote:

I want to independently change the color of the following 4 "parts":

1. Footnote mark in the text.
2. Footnote mark in the footnote.
3. Footnote text (--> \textcolor{blue}{Footnote text} works locally.).
4. Line that separates footnote from the text.

Any ideas on how I can achieve this? At the moment I use a combination of \setbeamercolor{footnote}{fg=white}, \setbeamercolor{footnote mark}{fg=.} and \footnote{\textcolor{color}{Text}}.

---

\documentclass{beamer}   

% see https://tex.stackexchange.com/questions/6147
\setbeamercolor{footnote}{fg=red}
\setbeamercolor{footnote mark}{fg=red}

\begin{document}
    \begin{frame}
        Test\footnote{Test}.
    \end{frame}
\end{document}

---

---

Related

• Making footnote marks in beamer use the surrounding color
• Adding color to the footnote mark in Beamer

Answer 1

As your question just asked about individually coloring components of footnotes without including an actual color scheme, the following is just a guess:

With you can change the color of the separating line: \let\oldfootnoterule\footnoterule \renewcommand{\footnoterule}{\color{<color>}{\oldfootnoterule}}

\documentclass{beamer}   

% see https://tex.stackexchange.com/questions/6147
\setbeamercolor{footnote}{fg=blue}
\setbeamercolor{footnote mark}{fg=.}

\let\oldfootnoterule\footnoterule
\renewcommand{\footnoterule}{\color{green}{\oldfootnoterule}}

\begin{document}
    \begin{frame}
        Test{\footnote{Test}}. % \footnote{} needs to be surrounded by {}!
    \end{frame}
\end{document}

Here I have also included a possibility to get 4 different colors for the four elements. I have included some hopefully explanatory annotations in the code:

\documentclass{beamer}   

% see https://tex.stackexchange.com/questions/6147
\setbeamercolor{footnote}{fg=blue} % <----- Color of footnote in footline (will be overwritten later)
\setbeamercolor{footnote mark}{fg=.}% <----- Color of footnotemark is the same as surrounding text. Causes the footnotemark in the footer to be the color specified in the line before.

\let\oldfootnoterule\footnoterule
\renewcommand{\footnoterule}{\color{green}{\oldfootnoterule}}% <----- Color of the separating rule.

\let\oldfootnote\footnote 
\renewcommand{\footnote}[1]{\color{brown}\oldfootnote{\color{red}#1}} % <----- 1: Color of the footnotemark in the text (overwrites the color specified in lines 4+5); 2: Color of the footnote text (overwrites the color specified in line 4)



\begin{document}
    \begin{frame}
        Test{\footnote{Test}}. 
    \end{frame}
\end{document}