You can customize the appearance of your app to make it recognizable within the Microsoft Teams environment. Without changing the functionality, you can modify the app’s appearance to align it with the organization’s branding guidelines.

1. In the Microsoft Teams admin center, navigate to Teams apps > Manage apps.
   Alternatively, access Microsoft Teams from the Microsoft 365 admin center.
   
   
2. Select the app you wish to customize.
   The details of the app are displayed.
3. In Settings and customization, the first time you customize the app, click Add Customization.
   
   
   
   The next time onward, select your app and click Edit.
   The Edit customization dialog opens.
4. In Edit customization, update the app details, icons and/or colors. Learn more.
   
   
5. Click Apply.
   

You have customized your app branding. Your customization update may take up to 24 hours to be visible to your users.