beamercolorthemehbrs.sty

\mode<presentation>

% settings
%% font-color
\setbeamercolor*{title page header}{fg=black}
\setbeamercolor*{subtitle}{fg=black}
\setbeamercolor*{institute}{fg=black}
\setbeamercolor*{author}{fg=black}
\setbeamercolor*{date}{fg=black}
\setbeamercolor*{item}{fg=black}

%% font-size
\setbeamerfont*{author}{size=\small}

\mode
<all>