Most of Photivo's icons are taken from the Faenza GNOME icon theme without change.
http://gnome-look.org/content/show.php/Faenza?content=128143
For full details see the file Photivo-ICONDETAILS.

Original AUTHORS notice from the Faenza icons package
=====================================================
Faenza is designed and developed by Matthieu James <matthieu.james@gmail.com>.

Faenza icons are all licensed under the GPL.

Thanks to Holger Seelig and clemyeats for their help for having some text preview inside icons in Nautilus.
