When a users' name is displayed in PinkNotes you will see a color status next to their name. The different user status colors are as follows.

Yellow = Offline

Green = Online

Orange = Online, but no activity has occurred for that user for a while

Red = the user has the Do Not Disturb option turned on

Blue = Auto Response is turned on for that user
NOTE: no matter what the current status is for any user you can always send them a PinkNote. If a user is offline, they will receive the PinkNote the next time to login.