Consider the following
\documentclass[final, 10pt]{beamer}
\mode<presentation>
{ \usetheme[]{Warsaw}}
\begin{document}
\begin{frame}
\frametitle{title}
\begin{block}{foo}
\begin{enumerate}
\item say this
\item say that
\end{enumerate}
\end{block}
As said in \fbox{1} and described in \fbox{2} \dots
\end{frame}
\end{document}
I would like to have two blue balls instead than the ugly \fbox substitutes. Is that possible ?