You can change the look and feel of all your Office programs by changing the Office Theme.
How to change your Office theme
To change the background color and design of all your Office programs, go to File > Options > General > Office Theme.
The colorful theme aligns with the visuals of our modern Office apps by bringing their primary accent color to the ribbon.
The colorful theme in Excel:
The colorful theme in PowerPoint:
The colorful theme in Word:
Dark gray theme
The dark gray theme is perfect for those who prefer a softer take on high-contrast visuals. Here's an example of the dark gray theme applied to PowerPoint:
The Black theme provides the highest-contrast visual for your Office theme. Here's an example of the black theme applied to PowerPoint:
The white theme displays the classic look of Office. Here's an example of the white Theme in PowerPoint:
On the Mac you can choose between two Office themes: Colorful or Classic. Additionally, if you set macOS to Dark mode Office will respect that choice. To change the Office theme click on the menu for your Office application (Word, Excel, etc) and select Preferences > General. Select the dropdown next to Office theme and choose the theme you want.
The colorful theme aligns with the visuals of our modern Office apps by bringing their primary accent color to the ribbon. Here's an example of the colorful theme in Word.
The classic theme is for customers who want the classic look of Office. Here's an example of the classic theme in Word.
This feature is available to Office Insiders only right now.
To put Office in dark mode you need to change this setting in the macOS system preferences. Click the Apple menu at the top left, select System Preferences > General and at the top of the dialog box you can switch your macOS from Light mode to Dark. Here's an example of Word in dark mode.
This article was last updated by Ben on December 4th, 2018 as a result of your comments. If you found it useful, and especially if you didn't, please use the feedback controls below to leave us some constructive feedback so we can continue to make it better.