Wie zoekt die vindt
How to install a theme/style
Install the Theme/Style by either extracting and compiling it, or installing an RPM.
Open the KDE-Menu and start the Control Center.
Select "Look and Feel".
Select "Style" if the package you installed was a style, or select "Theme Manager" if the package you installed was a theme.
Select your theme or style.
Click "Apply"
Have fun!