Mitchell Mohrhauser works as an artist at CCP, the developers of EVE Online and the upcoming Dust 514. Which means, yeah, there'll be art from their dark sci-fi future, but also other stuff of a more bright and cheerful nature.
Well, maybe just bright. Men with guns, samurai and epic sci-fi vistas are many things, but cheerful probably isn't one of them.
If you like what you see, you should check out Mohrhauser's personal site.
To see the larger pics in all their glory (or so you can save them as wallpaper), right-click on them below and select "open in new tab".