User blog comment:Susanolivia/Experience the new Wikia/@comment-1158367-20100925052145/@comment-3100721-20100925091816

Oasis is/was the internal name of the new look. For example, Wikia.css was Oasis.css in the MediaWiki space for the first bit of the beta before Wikia decided that they wanted a singular look, that being the Wikia skin.Such is reflected on the MediaWiki:Wikia.css's page history at WoWWiki for the creation and move from Oasis to Wikia.

However I still wonder why we still have the personal CSS for this skin as oasis.css. Only time will tell.