Linux Mint 12 comes with a couple of cool, new themes. Here's how to change your theme.
1. Click the menu in the top panel.
2. Click the Advanced Settings icon.
3. Click the theme section on the left side of the menu.
4. Click the drop down menus to change whichever themes you want. You can change the window theme, cursor, shell, etc.
Enjoy your new Linux Mint 12 theme(s).