Well, I have the "final" versions of these logos. Note I'm not suggesting they are the best possible, they're just a suggested modification of the logos already available at
http://threepress.org/epub/logos. I did versions with and without shadow. For the moment they are in
http://djelibeibi.unex.es/files/freepub.htm, but I don't know how long I'll keep them there, is there enough interest to upload them to the wiki or something?
Personally, I'm not sure the DRM tag is a good idea, it seems to say the opposite from what we want to say.
PS. The SVG versions have a wrong page size (I couldn't get it right with Inkscape) and need the Steelfish font.