Addictivetips published a tutorial about installing PurpIE Gnome Shell theme on Linux.
How to install the PurpIE Gnome Shell theme on Linux
PurpIE (AKA Rounded-Rectangle-Purple) is a Gnome Shell theme that turns your Gnome desktop from the basic black/grey/blue colors to a refreshing purple.
How to install the PurpIE Gnome Shell theme on Linux