Analysis demo graph using sharp-edged boxes for source files

As Raul pointed out, to avoid confusion for a color-blind audience, or
when its printed in black-and-white, its best to not just base the
source-build distinction in the graph based on color.

With this commit, the source files have sharp edges and the built
files have round edges.

1 files changed, 5 insertions, 4 deletions

diff --git a/tex/preamble.tex b/tex/preamble.tex
index 91466be..8cfd71e 100644
--- a/tex/preamble.tex
+++ b/tex/preamble.tex
@@ -39,10 +39,11 @@
 %% For the make demo
 \newcommand{\makedemoslide}[2] {
   \begin{frame}{#2}
-    \begin{center}\includegraphics[width=0.8\linewidth]{#1}\end{center}
-    \footnotesize \textcolor{green!50!black}{Green boxes} are \emph{source}
-    files (hand-written), \textcolor{blue}{Blue boxes} are \emph{built}
-    files (automatically generated).
+    \begin{center}\includegraphics[width=0.8\linewidth]{#1}\end{center}\par \vspace{-5mm}
+    \footnotesize \textcolor{green!50!black}{Green boxes} with sharp
+    corners: \emph{source} files (hand written).\\\textcolor{blue}{Blue
+      boxes} with rounded corners: \emph{built} files (automatically
+    generated).
   \end{frame}
 }