Diferentes partes do rodapé em cores diferentes no Beamer?

Diferentes partes do rodapé em cores diferentes no Beamer?

Gostaria de modificar as três partes do rodapé em cores diferentes. Como isso é possível? Aqui, há três partes para meu rodapé.

\documentclass[10pt,xcolor={dvipsnames}]{beamer}
\usefonttheme{professionalfonts}
\useoutertheme{infolines}

\mode<presentation> {

\usetheme{Frankfurt}
\usecolortheme{whale}


\setbeamercolor{section in head/foot}{bg=blue!0!black,fg=white}
% -------------------------------------------------------------------------------------------------------------------------------------
% footer
%\setbeamercolor{section in foot}{fg=white, bg=OliveGreen}
%\setbeamercolor{section in foot}{fg=white, bg=MidnightBlue}
\setbeamerfont{footline}{size=\fontsize{6}{6}\selectfont}
%\setbeamercolor{section in foot}{fg=white, bg=ForestGreen}
%\setbeamercolor{section in foot}{bg=blue!40!black,fg=white}
\setbeamercolor{section in foot}{fg=white, bg=BlueViolet}
\setbeamertemplate{footline}
{
 \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.6ex,dp=1ex,center]{section in foot}%
    \usebeamerfont{section in foot}\insertshortauthor
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.6ex,dp=1ex,center]{section in foot}%
    \usebeamerfont{section in foot}\insertsubtitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.35\paperwidth,ht=2.6ex,dp=1ex,center]{section in foot}%
    \usebeamerfont{section in foot} Stanford \text{    } \insertframenumber/\inserttotalframenumber
  \end{beamercolorbox}}% 

  \vskip0pt%
}

\setbeamertemplate{navigation symbols}{}
}


\subtitle{\hspace{20mm} Signal Processing}
\author{Stephen}
\date{March 3, 2017}
% ------------------------------------------------------------------------------------------------------------------------------------------
\usepackage{graphicx} % Allows including images
\usepackage{booktabs} % Allows the use of \toprule, \midrule and \bottomrule in tables


\begin{document}

\begin{frame}[plain]
\titlepage % Print the title page as the first slide
\end{frame}

\begin{frame}
\frametitle{Overview} % Table of contents slide, comment this block out to remove it
\tableofcontents % Throughout your presentation, if you choose to use \section{} and \subsection{} commands, these will automatically be printed on this slide as an overview of your presentation
\end{frame}



%------------------------------------------------

\begin{frame}
\Huge{\centerline{The End}}
\end{frame}

%----------------------------------------------------------------------------------------

\end{document}

Responder1

coloração dividida

\documentclass[10pt,xcolor={dvipsnames}]{beamer}
\usefonttheme{professionalfonts}
\useoutertheme{infolines}

\mode<presentation> {

\usetheme{Frankfurt}
\usecolortheme{whale}

\setbeamercolor{section in head/foot}{bg=blue!0!black,fg=white}

\setbeamerfont{footline}{size=\fontsize{6}{6}\selectfont}
\setbeamercolor{section in foot}{fg=white, bg=BlueViolet}
\setbeamercolor{subsection in foot}{fg=BlueViolet, bg=white}
\setbeamertemplate{footline}
{
 \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.6ex,dp=1ex,center]{section in foot}%
    \usebeamerfont{section in foot}\insertshortauthor
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.4\paperwidth,ht=2.6ex,dp=1ex,center]{section in foot}%
    \usebeamerfont{section in foot}\insertsubtitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.35\paperwidth,ht=2.6ex,dp=1ex,center]{subsection in foot}%
    \usebeamerfont{section in foot} Stanford \text{    } \insertframenumber/\inserttotalframenumber
  \end{beamercolorbox}}%

  \vskip0pt%
}

\setbeamertemplate{navigation symbols}{}
}

\subtitle{\hspace{20mm} Signal Processing}
\author{Stephen}
\date{March 3, 2017}

\usepackage{graphicx}
\usepackage{booktabs}

\begin{document}

\begin{frame}[plain]
\titlepage
\end{frame}

\begin{frame}
\frametitle{Overview}
\tableofcontents
\end{frame}

\begin{frame}
\Huge{\centerline{The End}}
\end{frame}

\end{document}

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