Beamer theme options (#10243)

Add theme options to default.beamer: `colorthemeoptions`, `fontthemeoptions`,
`innerthemeoptions`, `outerthemeoptions`.

MANUAL.txt

@@ -2898,8 +2898,8 @@ These variables change the appearance of PDF slides using [`beamer`].
 `theme`, `colortheme`, `fonttheme`, `innertheme`, `outertheme`
 :   beamer themes
 
-`themeoptions`
-:   options for LaTeX beamer themes (a list).
+`themeoptions`, `colorthemeoptions`, `fontthemeoptions`, `innerthemeoptions`, `outerthemeoptions`
+:   options for LaTeX beamer themes (lists)
 
 `titlegraphic`
 :   image for title slide

data/templates/default.beamer

@@ -42,19 +42,19 @@ $if(theme)$
 \usetheme[$for(themeoptions)$$themeoptions$$sep$,$endfor$]{$theme$}
 $endif$
 $if(colortheme)$
-\usecolortheme{$colortheme$}
+\usecolortheme[$for(colorthemeoptions)$$colorthemeoptions$$sep$,$endfor$]{$colortheme$}
 $endif$
 $if(fonttheme)$
-\usefonttheme{$fonttheme$}
+\usefonttheme[$for(fontthemeoptions)$$fontthemeoptions$$sep$,$endfor$]{$fonttheme$}
 $endif$
 $if(mainfont)$
 \usefonttheme{serif} % use mainfont rather than sansfont for slide text
 $endif$
 $if(innertheme)$
-\useinnertheme{$innertheme$}
+\useinnertheme[$for(innerthemeoptions)$$innerthemeoptions$$sep$,$endfor$]{$innertheme$}
 $endif$
 $if(outertheme)$
-\useoutertheme{$outertheme$}
+\useoutertheme[$for(outerthemeoptions)$$outerthemeoptions$$sep$,$endfor$]{$outertheme$}
 $endif$
 % Prevent slide breaks in the middle of a paragraph
 \widowpenalties 1 10000