Xfce 4.20 theming: GTK, xfwm4 and icons
Xfce looks simple because it does not hide its modules. The same modularity explains its most common theme complaint: changing Appearance styles the applications but may leave the titlebars untouched. Xfwm4 draws those separately. Once that split is clear, Xfce is one of the easiest desktops to theme, back up and automate. The three diagrams... » read more