"OpenStreetMap's Contributor Community Visualized"

In a weekly news message in the German forum, a new map was mentioned: all road segments receive a color designating its mapper. How do you think such a map looks like - in countries with many contributors, in Thailand?
Well, take a look at the blog entry: https://www.mapbox.com/blog/osm-community-visualized/
and a look at Thailand: http://bl.ocks.org/lxbarth/raw/6545162/#7/14.738/102.827