reference to universal color schemes

plotting/lecture/plotting-chapter.tex

@@ -26,6 +26,8 @@
 \item Verschiedene Stile fuer Achsenbeschriftung (gross/kleinschreibungen, Klammertyp fuer Einheiten), stay with one style!
 \item Stay with a coherent style (font type/style/size, colors schemes, line styles/thickness, point styles), same line style in all plots for the same quantity. How to do consistent line styles in matlab (python: dictionary for kwargs)?
 \item Different plots for journal papers and presentations!
+\item Color universal design for color blind people: 
+  \url{http://jfly.iam.u-tokyo.ac.jp/color/}
 \end{itemize}
 
 \end{document}