On the FOAM Map, you will see icons in four colors. This tells you the status of different points of interests (POIs) as you move around the map.
Blue is ‘pending’ which shows that a POI is a candidate has not yet been verified.
Red is ‘challenged’ which show that a POI has been challenged and currently can be voted on.
Green means ‘verified’.
Yellow is a ‘signal’ which shows where cartographers need decentralized location services most.