Windows 7 "Diffusion" - An Awesome Windows 7 Theme.

It seems like you are referring to a link that showcases the "Diffusion Theme" for Windows, which features 13 different backgrounds. Unfortunately, the link provided seems to be incomplete or formatted incorrectly.
If you can provide the correct link or any additional information about the theme, I'd be happy to help you explore the backgrounds and provide more information. Feel free to share more details or the correct link so we can delve into the amazing backgrounds of the Diffusion Theme for Windows.