\documentclass[aspectratio=169]{beamer}
\usepackage[frenchb]{babel}

\usepackage{beamerx}

\title[Subtitle]{Title}
\author{John Smith}

\begin{document}
  \xsection{violet}[Short-title]{Title}
  \xsection{violet}[Short-title]{Title}[my-picture]
  \xsection*{violet}{Title}
\end{document}