Support for new Office theme setting (Use system setting)

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Support for new Office theme setting (Use system setting)

Posts: 23
Joined: 2009-05-25

With the release of Office 365 version 2011 in January 2021, Microsoft introduced a new Office theme setting which allows users to configure Outlook to follow your system setting rather than setting a theme like 'black'. See here for more information:

The 'UI Theme' registry value in Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common which corresponds to the 'Use system setting' appears to be 6.

In our Outlook add-in we, use the ADXAddinModule.OfficeColorScheme property to determine the currently selected Office theme. When 'Use system setting' is selected, the OfficeColorScheme property returns 'Colorful(5)' even if the Windows theme is set to dark. As a consequence, Outlook is displayed in dark mode but our add-in renders in the default light mode.

Is this something you are aware of? If so, will this be addressed in an upcoming release?

Posted 04 Feb, 2021 22:15:56 Top
Andrei Smolin

Add-in Express team

Posts: 17613
Joined: 2006-05-11
Hello David,

We are going to support this in the next build. As far as we can see, that setting allows Office to switch between the Black and Colorful themes depending on the option chosen for the Windows mode; see Settings | Personalization | Colors. Hope they won't invent anything affecting the way the code works.

This issue is written to our issue-tracking db under #19501. You'll see this number in whatsnew.txt of the Add-in Express build fixing this issue.

Regards from Belarus (GMT+3),

Andrei Smolin
Add-in Express Team Leader
Posted 11 Feb, 2021 11:19:44 Top