These are the Mojave GTK and icon themes for snaps. Mojave like themes which supports GTK 3 and GTK 2 based desktop environments like Gnome, Unity, Budgie, Pantheon, Cinamon, XFCE, Mate, etc. This snap provides the GTK themes in a form that can be used by other snapped applications.
This snap is packaged from vinceliuice's repositories. You can download the whole theme from there:
Enable snaps on Linux Mint and install Mojave Themes for Snaps
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap is available for Linux Mint 18.2 (Sonya), Linux Mint 18.3 (Sylvia), Linux Mint 19 (Tara), Linux Mint 19.1 (Tessa) and the latest release, Linux Mint 20 (Ulyana).
You can find out which version of Linux Mint you’re running by opening System info from the Preferences menu.
On Linux Mint 20, /etc/apt/preferences.d/nosnap.pref needs to be removed before Snap can be installed. This can be accomplished from the command line: