Gtk and Kvantum themes are avilable.
2021-12-29 04:25 (by kilz)

I have recently added most of the Gtk (49) and Kvantum (49) themes that have
been used in SbK spins as stand alone packages that can be added to most Linux installs.
You can view the themes here Gtk and here Kvantum.
They are all licensed under the GPL3.

Spins by Kilz 專案新聞存檔