General ⇒ my \newcommand not working :-(

[dmorgan]

Hi Everyone/Anyone

Using Beamer, I occasionally want to customize the colors for a block title background and body background to match one of the colors in an illustration on that slide.

It goes like this:

\begin{frame}
\setbeamercolor{block title}{bg=earthGreen}
\setbeamercolor{block body}{ bg=earthGreen!40}
\begin{block}{BlockTitle}
This is green
\end{block}
\end{frame}

To simplify this, I created a new command:

\newcommand{\myColoredBlock}[4][40]{
\begin{block}{#2}{
\setbeamercolor{block title}{bg=#3}
\setbeamercolor{block body}{bg=#3!#1}
#4
\end{block}

I then use the new command:

\begin{myColoredBlock}[35]{BlockTitle}{earthGreen}{
This is green
}\end{myColoredBlock}

But it isn't green! Clearly there is something wrong with my command.

Any ideas, anyone?

Thanks,

Dave

[dmorgan]

Figured it out. The colors need to be set before the block is entered. Duh!

\newcommand{\myColorBlock}[4][30]{
\setbeamercolor{block title}{bg= #3}
\setbeamercolor{block body}{bg= #3!#1}
\begin{block}{#2}
#4
\end{block}
}

Now it works fine!