Mint-Z-Mate is an open source GTK2 style specially designed for the GNOME Classic and MATE desktop environments. It is inspired by the Mint-Z theme of the Linux Mint operating system.
How to install?
· Right click on your desktop and select Change Desktop Background
· Click on the first tab: Theme
· Drag and drop the theme's archive in the Appearance Preferences window.
· If everything is OK, you will receive a confirmation message and you can activate the theme just by clicking on it.