Présentation, tables des matières intermédiaires : griser les sections autres que celle en cours

presentation_irstea.tex

@@ -37,7 +37,7 @@
     \frametitle{\insertsection}
     \tableofcontents[
         currentsection,
-        sectionstyle=show/show,
+        sectionstyle=show/shaded,
         subsectionstyle=show/show/hide
     ]
   \end{frame}

presentation_irstea/beamerthemeirstea.sty

@@ -23,6 +23,7 @@
 \setbeamertemplate{navigation symbols}{}
 \setbeamertemplate{blocks}[rounded][shadow=true]  
 \setbeamertemplate{footline}[frame number]
+\setbeamertemplate{section in toc shaded}[default][45]
 \setbeamerfont{footline}{size=\fontsize{9}{11}\selectfont} %https://tex.stackexchange.com/a/26899/124910
 \setbeamercolor{section in toc}{fg=marine}
 \setbeamercolor{subsection in toc}{fg=ocean}