I hope these steps help you. This post will help you if the Dark Mode is not working in the new Outlook app. How do I change the background color in Outlook Windows 11? To change the background ...

Open the app's settings to find the dark mode toggle This article explains how to turn dark mode on and off in Outlook for ...

Previously we had learned the method to enable Dark Mode for Teams, OneNote, and Outlook. Proceeding further, let us now cover other office applications like Word, PowerPoint, and Excel.