LiNstaBF is an XFCE theme based on LiNsta Black Flat.
XFCE is a free software desktop environment for Unix and other Unix-like platforms, such as Linux, Solaris and BSD. It aims to be fast and lightweight, while still being visually appealing and easy to use.
The current version, 4.4, is modular and reusable. It consists of separately packaged components, which together provide the full functionality of the desktop environment, but can be chosen from to create the user's preferred personal working environment. XFCE is mainly used for its ability to run a modern desktop environment on relatively modest hardware.
It is based on the GTK+ 2 toolkit (as is GNOME). It uses the Xfwm window manager, described below. Its configuration is entirely mouse-driven, and the configuration files are hidden from the casual user.
XFCE is somewhat similar to the commercial CDE, but has been getting a little farther away from that comparison with each new major version.