The add-on is great and I love F 117, but it has a few shortcomings. If the author fixes them, I'll be happy to give it a 5. I understand that the author is not obliged to change anything. Despite this, I want to say that it annoys me that the most necessary button, namely adding new tabs, is not visible at all and you, like a mole, try to hit it, sometimes touching the previous tab. Otherwise, everything is fine, but also the moon is a bit unnecessary, although then F 117 would not be visible at all, so it is necessary. I wish good luck to the creator of this theme because he has many cool themes that the Firefox community cannot offer. By Matrix