Spartacus fetches the themes from the "additional_themes" CVS repository. So ever ytheme that is there, will be shown.
All working themes can get committed there if they look decent enough that at least I think it's nice.
Either I can commit them to CVS if somebody tells me the location of their zipfile, or people with CVS access can commit and maintain it tehmselves.
In the past I committed themes when they were mentioned here in the forums and the makers wanted to put it online, and the feedback was great. I often don'T have the time to check themes very thouroughly, but the public has made that quite alright in the past time.
Do you see any reasons to have non-spartacus themes available anywhere? Is there demand for people who do not want to put their themes into Spartacus? I'm open to discussion, but until know I thoguth that either people want to make their themes public, and want to include their theme in spartacus - or they didn't want to publish their theme publically.
As for the term: I mix up themes, templates and styles everytime. I'm really sorry for that.
Best regards,
Garvin