You have four theme options: Colorful, Dark Gray, Black, or White. Here, you’ll be able to change your Office background and theme. In the Word Options window that appears, make sure the “General” tab selected on the left and then on the right, find the “Personalize your copy of Microsoft Office” section. At the very bottom of the pane, select “Options.”
A pane will appear on the left side with several different options.
