Beamer \pause grey

Question

I want to pause items in beamer, and have all items in grey except the non-paused one. This question is similar, but does not work for me. MWE below

\documentclass{beamer}
\usetheme{CambridgeUS}  
\usecolortheme{beaver}
\setbeamercovered{transparent}
\setbeamercovered{%
  again covered={\opaqueness<1->{15}}}

\begin{document}
\begin{frame}{Important frame}

\begin{block}<1>{Important thing I}
blabla
\end{block}
\pause

\begin{block}<2>{Important thing II}
blabla
\end{block}
\pause

\begin{block}<3>{Important thing III}
blabla
\end{block}
\pause

\begin{block}<4>{Important thing IV}
blabla
\end{block}

\end{frame}
\end{document}

This is the closest I get, with the difference that \paused elements are only greyed after they have been introduced. I would like them to be visibly grey even before they were introduced

Any hints greatly appreciated.

Answer 1

As suggested by @Leandriis, adding still covered in \setbeamercovered does the trick. Here the updated MWE.

\documentclass{beamer}
\usetheme{CambridgeUS}  
\usecolortheme{beaver}
\setbeamercovered{%
  still covered={\opaqueness<1->{10}},  
  again covered={\opaqueness<1->{10}}}

\begin{document}
\begin{frame}{Important frame}

\begin{block}<1>{Important thing I}
blabla
\end{block}
\pause

\begin{block}<2>{Important thing II}
blabla
\end{block}
\pause

\begin{block}<3>{Important thing III}
blabla
\end{block}
\pause

\begin{block}<4>{Important thing IV}
blabla
\end{block}

\end{frame}
\end{document}