Tab Count Icon

Love this addon. The large size (full toolbar icon height compared to many other 'tab count' addons using 1/2 of that height) is awesome. Being able to change the color so that it gives higher contrast on darker themes is also especially nice. Not part of the addon itself, but for anyone else who likes using Firefox's Menu Bar (F10 + View > Menu Bar), it's also worth noting that you can go into the "Customize Toolbar" mode and drag this addon up to the Menu bar (I also add separators to get it to appear on the right-side of the window, below and immediately to the left of the minimize/maximize/close buttons on Windows/Linux). I find that between the large icon size, the customizable colors, and placing it up there, it stands out really nicely and is super visible at a glance. I use a bright (2nd row of color palette) purple and find that works really nicely for me on a dark theme while still being somewhat readable if I briefly end up on a lighter theme.