Members list "online" dots
In the "Members" section of the Alliance pages, there are dots that can be red, orange, yellow, or green to indicate how recently someone has been online. I noticed all of ours went red sometime around midnight on Saturday. I have also noticed that sometimes one is green when the player is not online, has not been recently, and does not appear shortly. Some mornings I come on and the colors have changed, but no other sign of life from that player.
Are these reliable indicators?