diff --git a/lines-example.tex b/lines-example.tex
index 4c87652..fbc438d 100644
--- a/lines-example.tex
+++ b/lines-example.tex
@@ -60,8 +60,9 @@
   \begin{block}{Title without logo}
     \verb!\setbeamertemplate{frametitle}[boxline]!
   \end{block}
-  \begin{block}{Color}
-    \verb!\setbeamercolor{frametitle}{fg=blue, bg=white}!
+  \begin{block}{Color/Font}
+    \verb!\setbeamercolor{frametitle}{fg=blue, bg=white}!\\
+    \verb!\setbeamerfont{frametitle}{size=\LARGE}!
   \end{block}
 \end{frame}
 
@@ -76,7 +77,9 @@
     \verb!\setbeamertemplate{frametitle line}[page][1pt]!
   \end{block}
   \begin{block}{Color}
-    \verb!\setbeamercolor{frametitle line}{fg=blue}!
+    \verb!\setbeamercolor{frametitle line}{fg=blue}!\\
+    An empty foreground color hides the line:\\
+    \verb!\setbeamercolor{frametitle line}{fg=}!
   \end{block}
 \end{frame}
 
@@ -90,8 +93,12 @@
     \verb!\end{frame}!
   \end{block}
   \begin{alertblock}{Try to avoid subtitles!}
-    Keep the messages on your slides nice and clean.
+    Keep the messages on your slides simple and clean.
   \end{alertblock}
+  \begin{block}{Color/Font}
+    \verb!\setbeamercolor{framesubtitle}{fg=blue}!\\
+    \verb!\setbeamerfont{framesubtitle}{size=\large}!
+  \end{block}
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@@ -176,10 +183,10 @@
 
 \begin{frame}{Blocks and theorems}
   \begin{block}{Some block}
-    Block with title and content: \texttt{block} environment.
+    Block with title and content: \texttt{block} environment with title as argument.
   \end{block}
   \begin{alertblock}{Careful!}
-    Alert block with title and content: \texttt{alertblock} environment.
+    Alert block with title and content: \texttt{alertblock} environment with title as argument.
   \end{alertblock}
   \begin{example}
     Example block with content: \texttt{example} environment.
@@ -211,6 +218,8 @@
   \end{block}
   \begin{block}{Color}
     \verb!\setbeamercolor{footline line}{fg=black}!
+    An empty foreground color hides the line:\\
+    \verb!\setbeamercolor{footline line}{fg=}!
   \end{block}
 \end{frame}
 
@@ -279,9 +288,8 @@
     \verb!\setbeamertemplate{title page graphic line}[default][1.5ex]!
   \end{block}
   \begin{block}{Color}
-    \verb!\setbeamercolor{title page graphic line}{fg=red}!
-  \end{block}
-  \begin{block}{Empty foreground color hides line}
+    \verb!\setbeamercolor{title page graphic line}{fg=red}!\\
+    Empty foreground color hides line:\\
     \verb!\setbeamercolor{title page graphic line}{fg=}!
   \end{block}
 \end{frame}
@@ -297,8 +305,10 @@
   \begin{block}{Line below title and subtitle}
     \verb!\setbeamertemplate{title page title line}[default][0.2ex]!
   \end{block}
-  \begin{block}{Color (empty foreground hides line)}
-    \verb!\setbeamercolor{title page title line}{fg=red}!
+  \begin{block}{Color}
+    \verb!\setbeamercolor{title page title line}{fg=red}!\\
+    Empty foreground color hides line:\\
+    \verb!\setbeamercolor{title page title line}{fg=}!
   \end{block}
 \end{frame}