# Change beamer itemize symbol and overlay

For a beamer presentation and would like to change the color of an itemize symbol after a certain slide. Related questions were answered several times and the solution looks like:

The gray enviroment is defined in the preamble

 \newenvironment{grayenv}{\only{\setbeamercolor{local structure}{fg=gray!40}}}{}


and then used within the itemize enviroment:

\begin{itemize}
\item bla bla bla
\item<gray@2-> bla bla bla
\end{itemize}


The code will produce a slide where the bullet of the second item will change color from the 2nd slide onwards. I would also like the item points to appear later on in my slides. This is also a simple problem to solve:

\begin{itemize}
\item<1-2> bla bla bla
\item<3-> bla bla bla
\end{itemize}


with the first item being displayed on the first two slides, and the second one from the third onwards.

Now, I would like to define that one of the itemized points will be visible starting from slide x, and, later on, its color will be changed. Something like:

 \item<2-,gray@5->


Unfortunately, this command is not recognized, and I receive the following error:

Environment 2-,grayenv undefined


Also inverting the two elements, will not produce the desired result. Any suggestion?

Best wishes, Leonardo

PS: here is a minal working example:

\documentclass[9pt,aspectratio=169]{beamer}

\newenvironment{grayenv}{\only{\setbeamercolor{local structure}{fg=gray!40}}}{}

\begin{document}

\begin{frame}
\begin{itemize}
\item<1-> Text
\item<2-> Text
\item<gray@3-> Text with changing bullet color
\item<4-> Bla bla
\end{itemize}
\end{frame}

\end{document}


I would like, that the third item, in addition to have its bullet color changed from the third slide onwards, will appear from the second one (with the standard bullet style).

• Please help us help you and add a minimal working example (MWE) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – user36296 Mar 30 '18 at 13:24

Like this?

\documentclass[9pt,aspectratio=169]{beamer}

\newenvironment{grayenv}{\only{\setbeamercolor{local structure}{fg=gray!40}}}{}

\begin{document}

\begin{frame}
\begin{itemize}
\item<1-> Text
\item<2-> Text
\item<2-|gray@3-> Text with changing bullet color
\item<4-> Bla bla
\end{itemize}
\end{frame}

\end{document}

• @leonardo2887 You're welcome! – user36296 Mar 30 '18 at 14:12