This is a Debian package for firebrand's "Plasma" XFCE Theme pack. I'll try to keep it updated as soon as I get notified about any changes ;)
Original description below:
Black themes mostly based on Dark Cold by Original Seed. GTK 3.20+
Be sure to manually select gtk-3.0/darkelements/panel.png for your Xfce4 panel background for best integration with any selected panel plugins you might use.
Non-backdrop state versions also included.