[Tex/LaTex] How to modify the following Beamer theme

beamer

I'm using 

\documentclass{beamer}
\usepackage{BeamerColor}
\usepackage[english]{babel}

\mode<presentation> {
\usetheme{myown}
\usecolortheme[named=salmon]{structure}
\setbeamercovered{transparent} }

\setbeamercolor{lower separation line head}{bg=LightSteelBlue3}
\setbeamercolor{lineup}{bg=salmon}
\setbeamercolor{linemid}{bg=IndianRed2}
\setbeamercolor{linebottom}{bg=LightSteelBlue3}

\begin{document}
title
\end{document}

where \usetheme{myown} is defines as 

\useoutertheme[footline=authortitle]{miniframes}
\useinnertheme{rectangles}
\usecolortheme{whale}
\usecolortheme{orchid}


\definecolor{beamer@blendedblue}{rgb}{0.137,0.466,0.741}

\setbeamercolor{structure}{fg=beamer@blendedblue}
\setbeamercolor{titlelike}{parent=structure}
\setbeamercolor{frametitle}{fg=black}
\setbeamercolor{title}{fg=black} \setbeamercolor{item}{fg=black}

\setbeamertemplate{headline}
{%
  \begin{beamercolorbox}[colsep=1.5pt]{upper separation line head}
  \end{beamercolorbox}
  \begin{beamercolorbox}[ht=1.7ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{section in head/foot}
    \vskip2pt\insertsectionnavigationhorizontal{\paperwidth}{}{}
  \end{beamercolorbox}%
  \ifbeamer@theme@subsection%
    \begin{beamercolorbox}[colsep=1.5pt]{middle separation line head}
    \end{beamercolorbox}
    \begin{beamercolorbox}[ht=1.7ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{subsection in head/foot}
      \usebeamerfont{subsection in head/foot}\insertsubsectionhead
    \end{beamercolorbox}%
  \fi%
  \begin{beamercolorbox}[colsep=1.5pt]{lower separation line head}
  \end{beamercolorbox}
} \mode <all>

\makeatletter
\DeclareOptionBeamer{compress}{\beamer@compresstrue}
\ProcessOptionsBeamer

\mode<presentation>

% The footline template is a modification of the one used in the
% Torino theme, Copyright 2007 by Marco Barisione
\setbeamercolor*{lineup}{parent=palette primary}
\setbeamercolor*{linemid}{parent=palette secondary}
\setbeamercolor*{linebottom}{parent=palette tertiary}
\setbeamercolor*{page header}{parent=titlelike}
\mode <all>

% some lengths (the height of the lines)
\newlength{\beamer@decolines@linemid}
\setlength{\beamer@decolines@linemid}{.015\paperheight}

\newlength{\beamer@decolines@lineup}
\setlength{\beamer@decolines@lineup}{.025\paperheight}

\newlength{\beamer@decolines@linebottom}
\setlength{\beamer@decolines@linebottom}{.01\paperheight}


% String used between the current page and the total page count.
\def\beamer@decolines@pageofpages{/}

\defbeamertemplate*{footline}{decolines theme}
{
  \leavevmode%
  % First line.
  \hbox{%
  \begin{beamercolorbox}[wd=.8\paperwidth,ht=\beamer@decolines@lineup,dp=0pt]{lineup}%
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.2\paperwidth,ht=\beamer@decolines@lineup,dp=0pt,right]{}%
    \hbox{\usebeamerfont{palette primary}\footnotesize\insertframenumber{} \beamer@decolines@pageofpages{} \inserttotalframenumber\hspace*{2ex}}%
  \end{beamercolorbox}%
  } %
  % Second line.
  \hbox{%
  \begin{beamercolorbox}[wd=\paperwidth,ht=\beamer@decolines@linemid,dp=0pt]{linemid}%
  \end{beamercolorbox}%
  } %
  % Third line.
  \hbox{%
  \begin{beamercolorbox}[wd=.9\paperwidth,ht=\beamer@decolines@linebottom,dp=0pt]{linebottom}%
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.1\paperwidth,ht=\beamer@decolines@linebottom,dp=0pt]{}%
  \end{beamercolorbox}%
  }%
}
\makeatother

and the question is how to modify the theme to get the two top lines in the same color as is used down, that is the first one salmon and the second one IndianRed2.

Best Answer

Set the two colors (I assume that the color names used are available in your system):

\setbeamercolor{top}{bg=salmon}
\setbeamercolor{bottom}{bg=IndianRed2}%

and then change the definition og the headline template to

\setbeamertemplate{headline}
{%
  \begin{beamercolorbox}[colsep=1.5pt]{upper separation line head}
  \end{beamercolorbox}
  \begin{beamercolorbox}[ht=1.7ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{top}
    \vskip2pt\insertsectionnavigationhorizontal{\paperwidth}{}{}
  \end{beamercolorbox}%
  \ifbeamer@theme@subsection%
    \begin{beamercolorbox}[colsep=1.5pt]{middle separation line head}
    \end{beamercolorbox}
    \begin{beamercolorbox}[ht=1.7ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{bottom}
      \usebeamerfont{subsection in head/foot}\insertsubsectionhead
    \end{beamercolorbox}%
  \fi%
  \begin{beamercolorbox}[colsep=1.5pt]{lower separation line head}
  \end{beamercolorbox}
}
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