Based on https://github.com/jacobmischka/gnome-shell-extension-dark-theme-toggle
With this gnome shell extentions one can toggle between dark and light GTK themes.
Supported themes: all the themes that ship a dark variant with "-dark" suffix name (e.g. Adwaita/Adwaita-dark).
It also supports toggle among Yaru's three variants default(mixed), dark and light.
Snap work has been made by https://github.com/MarcusTomlinson


