The coloured dots in the alliance member list tell you the following:

- blue = player is active at the moment
- green = player was active during past 24 hours.
- yellow – player was active during past 3 days.
- red – player was active during past 7 days.
- grey – player was not active during past 7 days (player is inactive)

Extended inactivity causes the game the automatic deletion of the account of the inactive player.