While the original author (Originalseed) appears to be unreachable,
according to https://www.opendesktop.org/p/1080259/ the license of this
theme (as well as its Emerald, Cinnamon, MDM/GDM and Metacity versions)
is GPLv2 or later.

Metacity support is based on GPLed version of RoyaleVSQ Black by Rob Louw.
