To install some awesome GTK themes for Fedora 19 MATE; type this command.
yum install gtk-equinox-engine.x86_64 gtk-nimbus-engine.x86_64 gtk-nodoka-engine.x86_64 |
To install some extra wallpapers and a couple of extra themes for Fedora, use this command.
yum install gnome-themes-legacy.noarch gnome-theme-curvylooks.noarch desktop-backgrounds-waves.noarch |
There is a list of some more awesome MATE themes here: http://www.securitronlinux.com/bejiitaswrath/lovely-gtk-themes-for-the-linux-mint-mate-desktop/.