Office365 ProPlus: How To Change Your Theme

To Change Your Theme:

1. Sign in to Office365 using your LSUMail credentials (e.g. mtiger1@lsu.edu). Please note, if you are off-campus, you may be required to follow additional steps to prove your identity. If you need assistance or more information about this step, please see Office365: Logging in with Multi-Factor Authentication (MFA).

2. In the top right corner, click the Settings button. 

3. Click the Theme button to display the available theme options.

4. Choose your theme and then click Save at the bottom of the screen.

Referenced from: Microsoft.com