Add color use examples

Author: reknih

NOTICE

@@ -889,3 +889,26 @@ licenses.
 
 Creative Commons may be contacted at creativecommons.org.
 ================================================================================
+
+Data licence Germany – attribution – version 2.0
+
+(1) Any use will be permitted provided it fulfils the requirements of this "Data licence Germany – attribution – Version 2.0".
+
+The data and meta-data provided may, for commercial and non-commercial use, in particular
+
+be copied, printed, presented, altered, processed and transmitted to third parties;
+be merged with own data and with the data of others and be combined to form new and independent datasets;
+be integrated in internal and external business processes, products and applications in public and non-public electronic networks.
+(2) The user must ensure that the source note contains the following information:
+
+the name of the provider,
+the annotation "Data licence Germany – attribution – Version 2.0" or "dl-de/by-2-0" referring to the licence text available at www.govdata.de/dl-de/by-2-0, and
+a reference to the dataset (URI).
+This applies only if the entity keeping the data provides the pieces of information 1-3 for the source note.
+
+(3) Changes, editing, new designs or other amendments must be marked as such in the source note.
+
+ 
+
+URL: http://www.govdata.de/dl-de/by-2-0
+================================================================================

files/images/chart-bad-deuteranopia.png

@@ -99,6 +99,9 @@ files! {
     "fonts/XITSMath-Regular.otf",
     "images/bad.svg",
     "images/base14-fonts.pdf",
+    "images/chart-bad-deuteranopia.png",
+    "images/chart-bad-regular.png",
+    "images/chart-good.png",
     "images/chinese.svg",
     "images/cylinder.svg",
     "images/diagram.svg",