documentclass[xcolor=dvipsnames]{beamer}
usecolortheme[named=BrickRed]{structure}
usetheme{Singapore}
begin{document}

section{Section No 1}
subsection{SubSection No 1}
frame{tableofcontents[currentsection]}
frame{tableofcontents[currentsubsection]}
frame{Some text 1}
subsection{SubSection No 2}
subsection{SubSection No 3}
frame{Some text 2}

section{Section No 2}
subsection{SubSection No 1}
frame{tableofcontents[currentsubsection]}
frame{Some more text 1}
subsection{SubSection No 2}
subsection{SubSection No 3}
frame{Some more text 2}

end{document}