Use this tag for GTK and theming related issues
GTK+ (formerly GIMP Toolkit, sometimes incorrectly termed the GNOME Toolkit) is a cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the LGPL, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the Wayland and X11 windowing systems, along with Qt.
