Ok, so I thought about it again, and I feel bad for just copying an image from google and pasting it here ( XD ) so I'm bringing one up that I made:
Ok, so the image is magical, it's not necessarily medieval, but its fantasy gfx, so I think it should work just fine. Instead of a plain, dark-blue background, we can input this here; yes it is possible to stretch the image and switch the size.
As it is right now, the image is to small. It needs reconfigured to whatever size the current background is. But how great would it be to have a dark, mysterious background for a website? =D
I don't know about the holiday backrounds, that would be kind of weird. But I like Shinetsu's because it is pretty awesome, but it's also blue, like the current backround, so it wouldn't be a huge change.
I think the change would be huge.I made a blue one too but it's not just a solid blue color.Shinetsu made another one that is also great and it would be a great change.