The theme of the Arc is a new modern flat theme with transparent elements for Gtk 3/2 and GNOME Shell. It is compatible with Gnome 3.14/3.16 and GTK 3.14/3.16, and works in most environments, that uses GTK engines, for example, Unity, Gnome, Cinnamon, Mate, Pantheon, etc.
The theme of the Arc consists of three independent themes: Arc light, Arc Darker – a combination of light and dark tones clearance and Arc Dark – dark theme.
Installation into Linux Mint:
Download and install the deb packages at the following link:
After the installation, activate the desired theme from Control center.