Hi
I have pushed an update with the user theme extension enabled
https://admin.fedoraproject.org/upda...6d56cfgit.fc15
Install it and gnome-tweak-tool. Restart the shell (alt+f2, "r" and enter)
You can download a theme from
http://half-left.deviantart.com/art/...nset-200111295
After you download the zip file, click on it via gnome-tweak-tool.. Revert option doesn't work yet (upstream bug report with patch filed already). Meanwhile, you can revert using
gsettings set org.gnome.shell.extensions.user-theme name none
Have fun!