\usepackage {colortbl}
{\color{green}%
\begin{tabular}{lrr}
  \color{black}
      \large\textbf{Table title}\\[3mm]
  \textbf{Description}
    & \textbf{Column 1}
             & \textbf{Column 2}\\[1mm]
  Row one  & mmmmm & mmmm  \\
  Row two  &  mmmm & mmm   \\
  Row three& mmmmm & mmmmm \\
  Row four & mmmmm & mmmm  \\
\arrayrulecolor{black}\cline{2-3}
  \color{black} Totals
           & \color{black}mmmmm
             & \color{black}mmmmm
\end{tabular}%
}
