linix stuff

sudo apt-get install gnome-shell-extensions

Then, install Elegance Colors GNOME Shell theme in Ubuntu (for GNOME Shell 3.6 and 3.8, so Ubuntu 12.10 and 13.04 only) using the following commands:

sudo add-apt-repository ppa:satyajit-happy/themes
sudo apt-get update
sudo apt-get install gnome-shell-theme-elegance-colors

Once installed, start the Elegance Colors process, required only once (it will then start automatically when you log in):

elegance-colors

And finally, use GNOME Tweak Tool to change the current GNOME Shell theme to "Elegance Colors". This can also be done via command line:

gsettings set org.gnome.shell.extensions.user-theme name 'elegance-colors'