Close all Windows (or minimize them by pressing the right button "Minimize all Windows" on the taskbar) and click on the free from labels, gadgets, and widgets to place on the desktop, right-click once.
In the drop-down list, select the line "Personalization". Opens the dialog box "Change images and sounds on the computer", containing the parameter settings of operating system design (desktop background, screen saver, appearance of Windows and workspaces and sound events).
In the opened window, there are icon themes, which shows the window color and background image of the desktop. Single-clicking the left mouse button on the icon will switch the color scheme available on selected. Choose your favorite theme and close the window "Change image and sound on computer."