It's just been done wonderably! It's calm clear, beautiful, subtle, and doesn't at all make our tabs "unreadable" as so many others do. I honestly can't find anything "wrong" with it. Very well done. Really.
That is because I made the image. But since you and several others have asked I will start working on a wallpaper. It will take awhile, because there are a lot of trees, etc. to put in...but we will see how it turns out. If so I will post the link on the theme site! I am very happy you like this, though. 😘