This is a wallpaper that will match any color you have on your desktop. Ie, your desktop color is green, then the wallpaper is green, your desktop color is blue, then the wallpaper is blue, etc ... It comes in 2 versions, one with a sidebar (if for instance you have Conky - on Linux) and one without a sidebar.To change the background color under Gnome and thus see the wallpaper, go to System > Preferences > Appearance > Background and select a color under "Colors", just below the list of wallpapers (of course, after you have selected the wallpaper).
Download Transparent Wallpaper.
[source and image credits: Ubuntu Life]
