\usetheme{Boadilla}
\setbeamercovered{transparent}
\setbeamertemplate{navigation symbols}{}

\definecolor{darkgreen}{rgb}{0, 0.5, 0.0}
\newcommand{\docutilsrolegreen}[1]{\color{darkgreen}#1\normalcolor}
\newcommand{\docutilsrolered}[1]{\color{red}#1\normalcolor}

\newcommand{\green}[1]{\color{darkgreen}#1\normalcolor}
\newcommand{\red}[1]{\color{red}#1\normalcolor}