What are the parameters for the various colors of displayed ADS-B traffic?

In ForeFlight Mobile 13.0 and later, airborne ADS-B traffic icons are color designated as follows:

Teal color represents airborne targets.

- Yellow targets are those targets that are within 2nm and +/-1200', or will be within 45 seconds.

- Red targets are those targets within 1.3nm and +/-1200', or will be within 25 seconds.

- Brown targets are surface targets.  

Image 1.  Normal color of airborne traffic.

Image 2.  Color of traffic target on the ground.

 

Note: For airborne traffic targets the TrafficTrend™ vector is projected out of the front of the arrowhead to indicate the target’s expected position in the next 60 seconds (longer vector = faster speed).