The default KDE theme is nice as it is, but it can also be customized in just a few easy steps. First, I like to copy my applications into the panel. You can drag them from the launcher to the panel and select link here.
Next, add some widgets using the Plasma control in the top right of the screen.
Right click desktop area and select Default Desktop Settings. Install a background and select it after installation completes.
Applying the desktop picture.
Well go to System Settings from the Launcher and we'll use Application Appearance and Workspace Appearance.
I chose Krita Dark, which comes with Kubuntu 12.10.
Add a theme in WorkSpace Appearance like Slim Glow And Activate
So, now you have a modified Kubuntu 12.10 KDE desktop in a few easy steps minus the time to download the custom backgrounds and themes. Hope this helps.
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