I wasn't surprised when I found out there was not template for MediaWiki
based presentations, but I was when it turned out that there is no
template for Wikimedia Foundation slides either.
If you want to participate in the creation of a template for MediaWiki
related presentations here is your chance:
https://www.mediawiki.org/wiki/User:Qgil/Presentation_template
See the discussion, where Juliendorra and me have been drafting and
discussing some ideas. These include factors like identity, style,
palette, fonts... Input from more designers is really welcome.
--
Quim Gil
Technical Contributor Coordinator @ Wikimedia Foundation
http://www.mediawiki.org/wiki/User:Qgil