Icon theme "Fugue" is based on

Fugue Icons http://p.yusukekamiyamane.com/
released under creative commons Attribution 3.0 Unported (CC BY 3.0) license http://creativecommons.org/licenses/by/3.0/

Momenticon Gloss Set Basic Icons http://www.momenticons.com/ 
released under creative commons Attribution-ShareAlike 3.0 United States (CC BY-SA 3.0 US) license http://creativecommons.org/licenses/by-sa/3.0/us/
 
