Changing the appearance of your KDE desktop can be done quite easily and flexibly by either individually controlling different parts of the visual appearance or by using a predefined theme. This guide explains the various customizable parts of KDE and how to control their appearance.
The desktop background, more commonly known as the wallpaper, allows you to display certain images on your desktop. The settings for the background are found in the KDE Control Center, or by -clicking on the desktop and selecting Configure Desktop....
In KDE, you have the option to use no picture, a single picture, or a slideshow of images. If No picture is chosen to be the desktop background, the Colors options are used instead. You can also choose whether to use a single background on all virtual desktops or to apply a different background for each desktop. This is done by selecting All desktops or the specific desktop name from the drop-down menu.
Other background images can be downloaded using the button on the right or you can visit the Wallpapers section of the kde-look.org website.