The iCloud Backup has four color coded states that reflect the current status of iCloud Backup”
Gray: iCloud backup is not enabled. Please enable iCloud backup.
Green: iCloud backup is enabled, operational and syncing your habit data. Everything is good!
Yellow: iCloud backup is communicating with Streakster. Please be patient. If you are stuck on the yellow iCloud for more than a few minutes, lock and unlock your phone or switch between Streakster and another application to get it to work again.
Red: iCloud backup is offline. Possible causes include a loss of internet connection or a temporary disruption of communication between the Streakster application and Apple iCloud backup.