Superb! -1 star because it doesn't fit 21:9 monitors (in my case 2560x1080): in full screen there's a dark-grey vertical bar on the left side hiding the navigation buttons and other bars that are enabled.

It's a pretty theme that does not make the tabs titles and the bookmarks unreadable, which is a big issue for a lot of themes

Does not seem to fit a 4k monitor, the top left just turns a dark color. Fix this and I'll change to 5 stars.

No 21:9 Support (3440x1440)

The LiteFox's Add-on Theme is Exquisite for the Eyesight Pals.