This is awesome! I added the code to my forum, but I created my own custom image in Photoshop. I create all the images for my forum myself. I also had to adjust the position of the image, it was overlapping the "Back to Top" button at the bottom of my forum, so you couldn't click the button at all. So I put the image right above the "Back to Top" button using CSS.
I also added a screenshot to this post, so you can see what it looks like on my forum, with the custom image I created in photoshop. Or you can see a live preview of it on my forum -
https://thetechgenius.net
Thank you for this!
-INSTALLED-
Edit: The screenshot looks a bit blurry, and I don't know why. But you can still see what it looks like on my forum.