Based on the designs of: Máirín Duffy, Alexander Smirnov(KDE), Martha Benitez(XFCE and LXDE) at: https://fedoraproject.org/wiki/Artwork/MediaArt/F17#Source_Artwork_2
Adapted to use as little ink as possible. The Scribus file is editable. Licences would be as per the original images.
If you need most of the above images and you don't want to download them individually, grab the source file: File:Fedora-18.sla.