two refinements for Monash default values

inst/rmarkdown/templates/monash/resources/template.tex

@@ -63,18 +63,15 @@ $endif$
 
 $if(colortheme)$
   \usecolortheme{$colortheme$}
-$else$
-  \usecolortheme{monashwhite}
 $endif$
 
 $if(fonttheme)$
   \usefonttheme{$fonttheme$}
 $endif$
 
+% A default size of 24 is set in beamerthememonash.sty
 $if(titlefontsize)$
   \setbeamerfont{title}{series=\bfseries,parent=structure,size=\fontsize{$titlefontsize$}{32}}
-$else$
-  \setbeamerfont{title}{series=\bfseries,parent=structure,size=\fontsize{22pt}{32}}
 $endif$
 
 $if(mainfont)$

inst/rmarkdown/templates/monash/skeleton/beamerthememonash.sty

@@ -3,7 +3,8 @@
 %% Updated by Rob J Hyndman. 8 October 2018
 
 \RequirePackage{beamerthememetropolis}
-\usecolortheme{monashblue}
+% For binb, one can alter the color theme by by setting eg 'colortheme: monashblue' in the YAML header
+\usecolortheme{monashwhite}
 \usefonttheme{monash}
 
 \metroset{progressbar=foot}
@@ -55,6 +56,7 @@
 \def\placefig#1#2#3#4{\begin{textblock}{.1}(#1,#2)\rlap{\includegraphics[#3]{#4}}\end{textblock}}
 
 % Monash title page
+% For binb, one can alter the font size by setting eg 'titlefontsize: 20pt' in the YAML header
 \setbeamerfont{title}{series=\bfseries,parent=structure,size=\fontsize{24}{32}}
 \setbeamertemplate{title page}
 {\placefig{-0.01}{-0.01}{width=1.01\paperwidth,height=1.01\paperheight}{titlepage}