I like to design my own themes and GDM logins. Haven’t quite gotten to publish them or have I? I can’t remember.
Check out these places in
They have the making of a quality backgrounds for gnome.
One particular in the panaroma is good for the lord of the rings conceptualisation.
Good one for gdm logins
I presume these are open licensed.
Right now I haven’t a system to kick some logins for anyone interested here they are.