Here is an interesting data visualization from Der Spiegel, on the rise of the Nationaldemokratische Partei Deutschlands (NPD), the German far-right party.
As you can see from the map and the post title, I don’t think the choice of brown dots as color scheme is random. It is a rather simple data visualization but it clearly shows the areas of greater influence of the NPD, as measured through voting rates. It shows rather clearly where the NPD has gotten some popularity (i.e.: the former East Germany).
That being said, I am not a big fan of dots because they make proportions / rates hard to tell. I know there is the legend on the left but once you start working on the map, can you really tell, beyond the areas of greater aggregations, exact percentages (when those are not given in the textual notations on the side?).
And if the brown is designed to underline some political ugliness, it succeeds.
It is a bit of a shame though that the article does not provide any explanation for this. Maybe the reasons are obvious to Germans, but I got this as part of the international, English-language edition, and not all readers (including me) may be aware of the subtleties of German party politics. Although I was aware that the former DDR is now the hotbed of far-right politics (for reasons of downward mobility, economic dislocations, and precarization), but I was hoping for more.