Royal Z is a black/white icon theme based on Spring and Papirus for Zorin 16 and Zorin 16 Plus. But should work without any problem on other distros as well.
It aims for Black GTK/Gnome-shell themes.
This is an alpha stage release for feedback and requests.
"Royal Z" goes well with the GTK/Gnome-shell theme "Shade of Z", which are available here: Shade of Z - Desktop - pling.com
Download "Royal Z": Royal Z - pling.com