Install crystalcursors by entering the following commands in the terminal:
sudo apt update sudo apt install crystalcursors
X11 mouse theme with the crystal look&feel
This package contains "Crystal" style mouse cursor themes in four colours (blue, green, white, and grey) as well as green and blue "classic", wherein certain cursors (e.g. the "hand" cursor) are white instead of coloured. . For Each of the above colours there are both right and left handed versions as well as animated and non-animated ones (except for the "classic" themes, which are all animated), for a total of 20 combinations. . Note: Please read /usr/share/doc/crystalcursors/README.Debian to learn how to change the default cursor theme system-wide.