Let’s start by making some basic changes to the way the desktop and windows look. We do this at a basic level by changing the theme. First, we’ll open the Desktop (or System) Settings (or Configure Desktop) application. This is the “Control Center,” if you will, for all our Plasma desktop settings. We can change just about everything we want from here – fonts, themes, screensavers, power settings, and much more.
For now we are going to focus on the basic theme, so open up the Workspace Appearance module, where we can change the way the windows look, the cursor color and style, and the color scheme of the desktop.