Using rowcolors causes the horizontal and vertical lines in my table to behave strangely . The second horizontal line after the first row is not visible, and the vertical line dissappears in the second row. Is there a way around this?
\documentclass[xcolor={table}]{beamer}
\begin{document}
\begin{frame}
\frametitle{Famous Composers}
\begin{center}
%\rowcolors{1}{}{lightgray} %-- this indicates the change in odd and pair rows
\begin{tabular}{|l|c|}\hline
a & b \\\hline\hline
c & d \\\hline
\end{tabular}
\end{center}
\end{frame}
\end{document}