Great Gnome Shell theme compatible with Gnome Shell 3.2 “3.x”. Elementary Viper Luna Shell Theme has a great color combinations for the dash favorite dock and icon hover design.
First backup currently available Gnome Shell Theme by copying files in this path then paste Elementary Viper Luna Shell Theme.
[note]To get this theme working with gnome 3.0.x replace the gnome-shell.css inside the gnome-shell folder with the one outside.[/note]