a OLD gnome2 theme can not be installed on gnome3
if you REALLY want the gnome 2 theme
then install the Gnome2 DE
on a OS that is still using Gnome2
RHEL 5.10 or RHEL 6.5
if you want the " use at your own risk" deviantart themes use the "gnome shell" ones for Gnome3
http://www.deviantart.com/customizat...v/gnome/gnome/
but i would use the ones you can get from using the built in tool
it grabs the compatible ones from gnome-look