At last! I found a good but NOT excellent "Mute Tab". Suggestion: Have a choice of 4 colors... one BLACK (which it is), a white, a yellow or a red. Or, at least one more... WHITE! Thanks for the add-on! ☺

Does what it says : ) I would appreciate a customizable keyboard key combination to turn it on and off.

Nice to mute all Tabs.
Can you make a keyboard shortcut to mute all?

need color option (white)