You have the choice between an Object based or a Regulation based map. Here in the article, the colors are shown according to the Object based map. Furthermore, the legend consists of five top categories:
3. Settlement and Security
Note: Even if the map layers are deactivated, the information is still stored in the background. This means that if you right-click in the map or perform a route check later, all map layers will be taken into account (even from disabled map layers).