It's most likely the issue with icon-theme issue. For me it turns red or blue depending or icon-theme. See https://i.imgur.com/zWYqIrl.png
** Also affects: ubuntu-themes (Ubuntu) Importance: Undecided Status: New ** Changed in: indicator-sound (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1738034 Title: Muted Sound Indicator randomly remains red when no sound is playing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/1738034/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs