Install squareness by entering the following commands in the terminal:
sudo apt update sudo apt install squareness
Description:
suite of skins for different applications
Squareness is a suite of skins for different platforms and applications (e.g. Windowblinds, Java Look And Feel, Mozilla Firefox) with the intent to create a uniform look and feel for all those platforms and applications.
Homepage: http://squareness.beeger.net/
Version: 2.3.0-7
Section: universe/utils