1

I'd like to change the color of beamer sidebar, however I don't know which parameter \setbeamercolor{}{} wants for the sidebar color. I'm using \usepackage{xcolor} and specify my own colors like that: \definecolor{myBlue}{RGB}{45,170,250}.

My tex compiler is xelatex

Here is my tex file:

\documentclass{beamer}                                                          

% beamer theme                                                                  
\usetheme{Marburg}                                                              

% german spelling                                                               
\usepackage[english,ngerman]{babel}                                             

% set font encoding                                                             
\usepackage[T1]{fontenc}                                                        

% math stuff                                                                    
\usepackage{amsmath}                                                            
\usepackage{amsfonts}                                                           
\usepackage{amssymb}                                                            

% color                                                                         
\usepackage{xcolor}                                                             

% set font to Helvetica Light                                                   
\usepackage{xltxtra}                                                            
\setsansfont[Ligatures=TeX]{Helvetica Light}                                    

\title{Präsentation}                                                            
\author{Max Mustermann}                                                         
\date{\today}                                                                   

% removes navigation bar                                                        
\beamertemplatenavigationsymbolsempty                                           

\begin{document}                                                                

\begin{frame}                                                                   
    \frametitle{Ein Demotitel}                                                  
    abcdefghijklmnopqrstuvwxyz äöüß 1234567890                                  
    ABCDEFGHIJKLMNOPQRSTUVWXYZ                                                  
\end{frame}                                                                     

\end{document}
2

If you want to know which beamer colors are used in certain theme, look at its definition style file, beamerthemeMarsburg.sty in this case. There you will see:

\mode<presentation>

\usecolortheme{whale}

\setbeamercolor*{titlelike}{use=structure,fg=structure.fg}

\useoutertheme[height=0pt]{sidebar}

\setbeamercolor{sidebar}{parent=palette primary}

{\usebeamercolor{palette quaternary}}
{\usebeamercolor{palette primary}}

\setbeamertemplate{sidebar canvas \beamer@sidebarside}[vertical shading][top=palette quaternary.bg,bottom=palette primary.bg]

which means that this theme uses color theme whale and that sidebar has a vertical shading based in colors palette quaternary.bg and palette primary.bg.

Now you have two possibilities, change palette definitions or just change sidebar definition. You must use the first one in case you want to be sure that every template based on this color is also change. If you just want to change sidebar background it's enough to add

\definecolor{myBlue}{RGB}{45,170,250}
\makeatletter
\setbeamertemplate{sidebar canvas right}[vertical shading][top=palette quaternary.bg,bottom=myBlue]
\makeatother

in your preamble. Of course, if your side bar is on the left, change right by left. The result looks like:

enter image description here

The complete code is:

\documentclass{beamer}                                                          

% beamer theme                                                                  
\usetheme{Marburg}                                                              

% german spelling                                                               
\usepackage[english,ngerman]{babel}                                             

% set font encoding                                                             
\usepackage[T1]{fontenc}                                                        

% math stuff                                                                    
\usepackage{amsmath}                                                            
\usepackage{amsfonts}                                                           
\usepackage{amssymb}                                                            

% color                                                                         
%\usepackage{xcolor}                                                             

% set font to Helvetica Light                                                   
\usepackage{xltxtra}                                                            
\setsansfont[Ligatures=TeX]{Tahoma}                                    

\title{Präsentation}                                                            
\author{Max Mustermann}                                                         
\date{\today}                                                                   

% removes navigation bar                                                        
\beamertemplatenavigationsymbolsempty                                           

\definecolor{myBlue}{RGB}{45,170,250}
\makeatletter
\setbeamertemplate{sidebar canvas right}[vertical shading][top=palette quaternary.bg,bottom=myBlue]
\makeatother

\begin{document}                                                                

\begin{frame}                                                                   
    \frametitle{Ein Demotitel}                                                  
    abcdefghijklmnopqrstuvwxyz äöüß 1234567890                                  
    ABCDEFGHIJKLMNOPQRSTUVWXYZ                                                  
\end{frame}                                                                     

\end{document}

Notes:

  1. I've used Tahoma font instead of original Helvetica Light.
  2. beamer already load xcolor, you can delete \usepackage{xcolor} from your preamble.

Result of \listfiles command

 *File List*
  beamer.cls    2013/12/02 3.33 A class for typesetting presentations (rcs-revi
sion 332bfd3ce558)
beamerbasercs.sty    2013/12/25 (rcs-revision 31cc758a62ae)
beamerbasemodes.sty    2013/09/03 (rcs-revision 768f2d98ca64)
beamerbasedecode.sty    2010/05/01 (rcs-revision efa082c6111d)
   ifpdf.sty    2011/01/30 v2.3 Provides the ifpdf switch (HO)
beamerbaseoptions.sty    2013/03/10 (rcs-revision 47431932db0d)
  keyval.sty    2014/05/08 v1.15 key=value parser (DPC)
geometry.sty    2010/09/12 v5.6 Page Geometry
  ifvtex.sty    2010/03/01 v1.5 Detect VTeX and its facilities (HO)
 ifxetex.sty    2010/09/12 v0.6 Provides ifxetex conditional
geometry.cfg
  size11.clo    2007/10/19 v1.4h Standard LaTeX file (size option)
 pgfcore.sty    2010/04/11 v3.0.0 (rcs-revision 1.7)
graphicx.sty    2014/04/25 v1.0g Enhanced LaTeX Graphics (DPC,SPQR)
graphics.sty    2009/02/05 v1.0o Standard LaTeX Graphics (DPC,SPQR)
    trig.sty    1999/03/16 v1.09 sin cos tan (DPC)
graphics.cfg    2007/01/18 v1.5 graphics configuration of teTeX/TeXLive
   xetex.def    2014/04/28 v4.01 LaTeX color/graphics driver for XeTeX (RRM/JK)

  pgfsys.sty    2013/11/30 v3.0.0 (rcs-revision 1.47)
  pgfrcs.sty    2013/12/20 v3.0.0 (rcs-revision 1.28)
everyshi.sty    2001/05/15 v3.00 EveryShipout Package (MS)
  pgfrcs.code.tex
  pgfsys.code.tex
pgfsyssoftpath.code.tex    2013/09/09  (rcs-revision 1.9)
pgfsysprotocol.code.tex    2006/10/16  (rcs-revision 1.4)
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   color.cfg    2007/01/18 v1.5 color configuration of teTeX/TeXLive
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atbegshi.sty    2011/10/05 v1.16 At begin shipout hook (HO)
infwarerr.sty    2010/04/08 v1.3 Providing info/warning/error messages (HO)
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hyperref.sty    2012/11/06 v6.83m Hypertext links for LaTeX
hobsub-hyperref.sty    2012/04/25 v1.12 Bundle oberdiek, subset hyperref (HO)
hobsub-generic.sty    2012/04/25 v1.12 Bundle oberdiek, subset generic (HO)
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ifluatex.sty    2010/03/01 v1.3 Provides the ifluatex switch (HO)
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etexcmds.sty    2011/02/16 v1.5 Avoid name clashes with e-TeX commands (HO)
kvsetkeys.sty    2012/04/25 v1.16 Key value parser (HO)
kvdefinekeys.sty    2011/04/07 v1.3 Define keys (HO)
pdftexcmds.sty    2011/11/29 v0.20 Utility functions of pdfTeX for LuaTeX (HO)
pdfescape.sty    2011/11/25 v1.13 Implements pdfTeX's escape features (HO)
bigintcalc.sty    2012/04/08 v1.3 Expandable calculations on big integers (HO)
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uniquecounter.sty    2011/01/30 v1.2 Provide unlimited unique counter (HO)
letltxmacro.sty    2010/09/02 v1.4 Let assignment for LaTeX macros (HO)
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xcolor-patch.sty    2011/01/30 xcolor patch
atveryend.sty    2011/06/30 v1.8 Hooks at the very end of document (HO)
refcount.sty    2011/10/16 v3.4 Data extraction from label references (HO)
 hycolor.sty    2011/01/30 v1.7 Color options for hyperref/bookmark (HO)
 auxhook.sty    2011/03/04 v1.3 Hooks for auxiliary files (HO)
kvoptions.sty    2011/06/30 v3.11 Key value format for package options (HO)
  pd1enc.def    2012/11/06 v6.83m Hyperref: PDFDocEncoding definition (HO)
hyperref.cfg    2002/06/06 v1.2 hyperref configuration of TeXLive
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  hxetex.def    2012/11/06 v6.83m Hyperref driver for XeTeX
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stringenc.sty    2011/12/02 v1.10 Convert strings between diff. encodings (HO)
rerunfilecheck.sty    2011/04/15 v1.7 Rerun checks for auxiliary files (HO)
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beamerbaserequires.sty    2010/05/01  (rcs-revision efa082c6111d)
beamerbasecompatibility.sty    2012/05/01  (rcs-revision 67c48b3b652d)
beamerbasefont.sty    2013/10/18  (rcs-revision 72f39e01808a)
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amsfonts.sty    2013/01/14 v3.01 Basic AMSFonts support
sansmathaccent.sty    2013/03/28
filehook.sty    2011/10/12 v0.5d Hooks for input files
beamerbasetranslator.sty    2010/06/11  (rcs-revision 85fd1cc7fc42)
translator.sty    2010/06/12 ver 1.10
translator-language-mappings.tex
beamerbasemisc.sty    2013/09/03  (rcs-revision a55719c41d85)
beamerbasetwoscreens.sty    2010/05/01  (rcs-revision efa082c6111d)
beamerbaseoverlay.sty    2013/12/25  (rcs-revision f6bd5e3805da)
beamerbasetitle.sty    2010/09/21  (rcs-revision f0446ed0b6ae)
beamerbasesection.sty    2013/06/07  (rcs-revision 60b9fe0f342f)
beamerbaseframe.sty    2013/10/02  (rcs-revision cdc8e9a3aaac)
beamerbaseverbatim.sty    2012/08/30  (rcs-revision dfdb135076b3)
beamerbaseframesize.sty    2011/09/12  (rcs-revision 70f9d8411e54)
beamerbaseframecomponents.sty    2013/10/18  (rcs-revision 5cf6c5555a45)
beamerbasecolor.sty    2010/06/06  (rcs-revision d1a9b48be06d)
beamerbasenotes.sty    2012/12/19  (rcs-revision 1686da3db3c9)
beamerbasetoc.sty    2013/05/23  (rcs-revision 0fdf5bc43be8)
beamerbasetemplates.sty    2010/05/01  (rcs-revision efa082c6111d)
beamerbaseauxtemplates.sty    2013/09/04  (rcs-revision 4ac715c499d0)
beamerbaseboxes.sty    2012/05/13  (rcs-revision 56972908a390)
beamerbaselocalstructure.sty    2013/09/04  (rcs-revision 4ac715c499d0)
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beamerbasenavigation.sty    2013/10/05  (rcs-revision 62be157fe783)
beamerbasetheorems.sty    2010/06/06  (rcs-revision 7e7cc5e53e9d)
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beamerthemedefault.sty    2010/06/17  (rcs-revision d02a7cf4d8ae)
beamerfontthemedefault.sty    2012/12/19  (rcs-revision 1686da3db3c9)
beamercolorthemedefault.sty    2012/12/19  (rcs-revision 1686da3db3c9)
beamerinnerthemedefault.sty    2013/10/15  (rcs-revision 65cb471f9634)
beamerouterthemedefault.sty    2012/12/19  (rcs-revision 1686da3db3c9)
beamerthemeMarburg.sty    2010/06/17  (rcs-revision d02a7cf4d8ae)
beamercolorthemewhale.sty    2010/06/17  (rcs-revision d02a7cf4d8ae)
beamerouterthemesidebar.sty    2010/06/17  (rcs-revision d02a7cf4d8ae)
   babel.sty    2008/07/08 v3.8m The Babel package
 bblopts.cfg    2006/07/31 v1.0 MiKTeX 'babel' configuration
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ngermanb.ldf    2008/07/06 v2.6n new German support from the babel system
 fontenc.sty
   t1enc.def    2005/09/27 v1.99g Standard LaTeX file
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fontspec.sty    2013/05/20 v2.3c Font selection for XeLaTeX and LuaLaTeX
   expl3.sty    2014/05/06 v4751 L3 programming layer (loader) 
expl3-code.tex    2014/05/06 v4751 L3 programming layer 
    etex.sty    1998/03/26 v2.0 eTeX basic definition package (PEB)
  xparse.sty    2014/05/05 v4740 L3 Experimental document command parser
fontspec-patches.sty    2013/05/20 v2.3c Font selection for XeLaTeX and LuaLaTe
X
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  eu1enc.def    2010/05/27 v0.1h Experimental Unicode font encodings
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xunicode.sty    2011/09/09 v0.981 provides access to latin accents and many oth
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fontspec.cfg
realscripts.sty    2013/03/18 v0.3c Access OpenType subscripts and superscripts

metalogo.sty    2010/05/29 v0.12 Extended TeX logo macros
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gettitlestring.sty    2010/12/03 v1.4 Cleanup title references (HO) 
| improve this answer | |
  • This doesn't work, it shows me the same color as before. I pasted the code just before \begin{document} – konze May 26 '14 at 12:12
  • @konze I've included the complete code I've used to produce the example. Please test it and let me know if it's still wrong. – Ignasi May 26 '14 at 12:17
  • Thank you, however this also doesn't work. – konze May 26 '14 at 12:25
  • @konze. Did you test with my complete example or did you included new lines into your code? Did you test my code with another bottom color? Did you delete your .pdf file before testing? Did you look into *.log file? Please provide some more details because I cannot imagin what happens. – Ignasi May 26 '14 at 12:54
  • Oh I'm sorry. I copied your whole example into a new clean file. I tested it with another bottom color twice (first: \definecolor{myBlue}{RGB}{255,0,0}, second: \setbeamertemplate{sidebar canvas right}[vertical shading][top=palette quaternary.bg,bottom=red]. I deleted the old pdf file before every test. In the log file are only warnings like LaTeX warning: "xparse/redefine-command"... Redefining document command ... – konze May 26 '14 at 14:54

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