This script installs the latest GitHub versions of some fine GNOME themes into the current user's .themes folder. Run the script again whenever you want to get the latest theme updates. Many of these themes are updated frequently with bugfixes and enhancements.

It supports GNOME versions 3.22 and above.

Icon themes in screenshot are:
Boston icon theme https://www.gnome-look.org/p/1012402/
Ozon icon theme https://github.com/ozonos/ozon-icon-theme/tree/master/Icons