Do you have a screenshot of that? I was going to use it until I saw I had to set EVERY SINGLE PROGRAM for an icon.Mute. You should consider ditching whatever you have installed giving you that and moving to Open Notifier. Free, retina icons, extensible.
Although, considering you are using a theme that has pixely buttons and it doesn't seem to bother you, I doubt the blurry mute icon will bother you either.
Thats Backgrounder. You can turn that off in its settings.No the N with the box around it....
Do you have a screenshot of that? I was going to use it until I saw I had to set EVERY SINGLE PROGRAM for an icon.