Package Mediterranean consists of twelve dark and light to those that can be combined, activating the GTK theme with different themes frame the windows, and various icons themes and Wallpapers, thereby to customize your desktop to your liking.
You can use it to change the utility, which is installed by default in Linux Mint.
Open a terminal (Ctrl+Alt+T), copy and run the following commands:
sudo apt-get update
sudo apt-get install mediterranean-theme[/simterm]
sudo apt-get update[/simterm]