In the Appearance section, select Light, Dark, or System (the latter will allow Outlook to reflect the system default setting).Select Outlook > Preferences > General.To enable and change the theme of your app, follow the steps below. We’ll use it to help guide our investments. Oh, and this is just the beginning! We are continuously working on enhancements, such as offering new colors and cause-based themes, so we welcome and appreciate any feedback you may have. You can apply a theme in both Light Mode and Dark Mode, as well as when using high-contrast system settings. They also enable you to increase the visibility, address any accessibility needs you might have, or simply beautify the user interface to suit your needs and interests. Themes empower you to enhance your Outlook for Mac experience by changing the color scheme of the app to one of six preset theme colors. I am excited to share the availability of a feature in the new Outlook for Mac that allows you to customize your work environment and add a little personality: themes! Themes

Hi Insiders! My name is Sabareesh Nikhil Chinta, and I am a Program Manager on the Outlook for Mac team.

Mac outlook 2021