beamerfontthemeppt_theme_1.sty

\mode<presentation>

\setbeamerfont{frametitle}{size =\huge, family=\fontfamily{MerriwthrSans-OsF}\selectfont, series=\bfseries}
\setbeamerfont{title}{size =\Huge, family=\fontfamily{MerriwthrSans-OsF}\selectfont, series=\bfseries}
\setbeamerfont{author}{size=\large}
\setbeamerfont{footnote}{size=\scriptsize}

\mode<all>