Board Thread:General Discussion/@comment-29931739-20180417142251/@comment-32823535-20180417143758

The blue means that friend has visited you, the blue clears when you visit the friend. The green means you are currently visiting that friend. The zzz's mean that friend is "sleeping" - hasn't played the game for awhile, but I don't know how many days you have to go without playing to be considered sleeping.