let me just go ahead and get excited for a second about all of the alex grey posts that people are making he's fucking insane
That's easy bro, just right click on your desktop go to preferences, and you'll see how you change it.
indeed it is. Found it on deviant art a couple months ago. It's been my wallpaper since....I've tripped on lsd and looked at this picture and it leaked out of my monitor and burned into my retnas.