You will have access to all 16 when you paste the appropriate files into C:\Windows\Resources\Themes.
There are 16 different versions of the theme: eight-light designs and eight dark designs. Flattastic ThemeĪs the name suggests, Flattastic kills color gradients and other design elements that give the impression of curvature and replaces the entire desktop with a flat look. Grab the installation files off DeviantArt and run the EXE file to get started. It even has three skins and a drag-and-drop interface.
Better yet, it also comes with a host of Mac apps ready to use, including Widget, Launchpad, Siri, Finder, and Exposé. It will replace the existing taskbar, and you can customize the dock to display the apps you want to see.