My openSUSE+KDE Desktop :)
Source (required if based on other people's work):
1) openSUSE 13.1 + KDE 4.11.2 - I composed the wallpaper with the illustration 'The Weeping Woman' by Carlos Ortega Elizalde.
2) Gimp and Photoshop (wine). A little CMYK test. Color management by Oyranos | Colour Management System.
3) KDE Workspaces