diff --git a/workshops/latex/latex.tex b/workshops/latex/latex.tex
index f32875c099b9c7f97e3b44c0f4bc2cafc4b5372b..aa4cf0a37d445364fec766ce9a52ca6c3bd7eac9 100644
--- a/workshops/latex/latex.tex
+++ b/workshops/latex/latex.tex
@@ -21,7 +21,9 @@
 \usefonttheme{professionalfonts}
 \newcommand{\bsl}{\textbackslash}
 
-\renewcommand\note[2][]{\ifshownotes#1{\color[rgb]{0,.5,0}#2}\fi}
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+\renewcommand\note[2][]{\ifshownotes#1{\color{darkgreen}#2}\fi}
+\newcommand\colorifnote{\ifshownotes\color{darkgreen}\fi}
 
 \hypersetup{unicode=true}
 
@@ -36,7 +38,8 @@
   commentstyle=\itshape\color{RoyalBlue},
   keywordstyle=\color{RoyalBlue}\bfseries,
   moretexcs={lstset,subsubsection,paragraph,subsection,color,sl,textcolor,lstinputlisting,newfontfamily,fontsize,section,documentclass,begin,includegraphics,hello,bye,setmainlanguage,setlength},
-  morekeywords={center,document,flushleft,flushright,itemize,enumerate,tabular,article,polyglossia,geometry,amsmath,graphicx,xcolor,hyperref,figure,babel,mathtools,equation,align}
+  morekeywords={center,document,flushleft,flushright,itemize,enumerate,tabular,article,polyglossia,geometry,amsmath,graphicx,xcolor,hyperref,figure,babel,mathtools,equation,align},
+  deletetexcs={vec}
 }
 
 \makeatletter
@@ -463,14 +466,15 @@
           \begin{minipage}[t][10mm][c]{.4\textwidth}
             \centering
             \scriptsize \ttfamily \verb|\sum_{n=0}^\infty n =|
-            \verb|-\frac{1}{12}|
+            \colorifnote\verb|-\frac{1}{12}|
           \end{minipage}
         }; &
         \node{\includegraphics[width=16pt]{figures/texstudio-compile.pdf}}; &
         \node[draw=blue!20!lightgray, line width=2pt]{
           \begin{minipage}[t][10mm][c]{.4\textwidth}
             \centering
-            $\displaystyle\sum_{n=0}^\infty n = -\frac{1}{12}$
+            $\displaystyle\sum_{n=0}^\infty n =
+            -\colorifnote\frac{1}{12}$
           \end{minipage}
         };
         \\
@@ -478,7 +482,7 @@
           \begin{minipage}[t][6mm][c]{.4\textwidth}
             \centering
             \scriptsize \ttfamily
-            \verb|\nabla\cdot\vec{E} = 4\pi\rho|
+            \verb|\nabla\cdot\vec{E} = 4|\colorifnote\verb|\pi\rho|
           \end{minipage}
         }; &
         \node{\includegraphics[width=16pt]{figures/texstudio-compile.pdf}}; &
@@ -492,8 +496,8 @@
         \node[draw=blue!20!lightgray, line width=2pt]{
           \begin{minipage}[t][6mm][c]{.4\textwidth}
             \centering
-            \scriptsize \ttfamily
-            \verb|\sqrt{e^{i\pi}} = \pm i|
+            \scriptsize\ttfamily
+            {\colorifnote\verb|\sqrt|}\verb|{e^{i\pi}} = \pm i|
           \end{minipage}
         }; &
         \node{\includegraphics[width=16pt]{figures/texstudio-compile.pdf}}; &