This theme was written for a resultion of 1920x1080.
To use it on a 2560x1440 screen, adjust the desktop-image in the file graygal/theme.txt to background_2560x1440.png.
Clone the repository:
$ git clone https://github.com/SamTheTechi/graygal
Switch to the repository folder:
$ cd graygal
Run the installation script:
$ ./install.sh
