When using an Apple desktop or laptop that is running the Mac OS X operating system, you navigate the folders and files on your hard drive using an application called the Finder. By default, all Finder windows are displayed as icons on a white background. However, you can customize certain color settings in the Finder's preferences and change the background color of Finder windows to black.
Step
Open a new Finder window by clicking on the "Finder" icon at the bottom of the screen.
Step
Go to "View" in the top menu bar and choose "Show View Options."
Step
Select the "Color" radio button in the section of the window labeled "Background."
Step
Click once on the white square that appears next to the "Color" radio button.
Step
Highlight "Black" in the color palette window.
Step
Click on the red X button in the upper-left corner of the color palette window to save the settings and make the background of your Mac's Finder black.
