Code background grey, use special code-block for GHCi

common/beamer_configuration.tex

@@ -13,22 +13,40 @@
 \usepackage[T1]{fontenc}
 \usepackage[Q=yes]{examplep}
 
+% color definition
+\definecolor{solarized}{HTML}{002B36}
+\definecolor{mygreen}{HTML}{009900}
+\definecolor{mygrey}{rgb}{0.95,0.95,0.95}
+
 % package configuration
 \DeclareGraphicsExtensions{.pdf,.png,.jpg}
 \beamertemplatenavigationsymbolsempty
 \setbeamertemplate{footline}[frame number]
+
+% minted
+%% fix the minted@colorbg environment
+\makeatletter
+\renewenvironment{minted@colorbg}[1]
+ {\def\minted@bgcol{#1}%
+  \noindent
+  \begin{lrbox}{\minted@bgbox}
+  \begin{minipage}{\linewidth-2\fboxsep}}
+ {\end{minipage}%
+  \end{lrbox}%
+  \setlength{\topsep}{\smallskipamount}% set the vertical space
+  \trivlist\item\relax % ensure going to a new line
+  \colorbox{\minted@bgcol}{\usebox{\minted@bgbox}}%
+  \endtrivlist % close the trivlist
+ }
+\makeatother
 \usemintedstyle{friendly}
-\newminted{haskell}{frame=single,numbers=left}
-\newminted{cpp}{frame=single,numbers=left}
-\newminted{c}{frame=single,numbers=left}
+\newminted{haskell}{bgcolor=mygrey,frame=single,numbers=left}
+\newminted{cpp}{bgcolor=mygrey,frame=single,numbers=left}
+\newminted{c}{bgcolor=mygrey,frame=single,numbers=left}
 \renewcommand{\theFancyVerbLine}{\ttfamily
 	\textcolor[rgb]{0.0,0.0,0.0}{\footnotesize
 	\oldstylenums{\arabic{FancyVerbLine}}}}
 
-% color definition
-\definecolor{solarized}{HTML}{002B36}
-\definecolor{mygreen}{rgb}{0,0.6,0}
-
 % macros and environments
 \newcommand{\code}[1]{\texttt{#1}}
 \newcommand{\slidep}{\onslide<+->}