Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, it's likely you're encountering an issue where the default purple theme persists on organizer and presenter invitations for Town Hall events in Microsoft Teams. After researching, here are some suggestions may be helpful to you.
- Have you tried to apply Theme After Adding Organizers/Presenters?
According to Microsoft’s support guidance, the theme should be applied:
- After the event is created and all roles are assigned.
- By navigating to Theming > Theme color in the event details and saving changes.
- Avoid Sending Invites Until Theme Is Finalized
The audit suggests that invites are sent to co-organizers before the event is finalized, which locks in the default theme
To avoid this:
- Finalize all theming (banner, logo, color) before clicking Save and Send Invites.
- Use the Preview feature if available (Teams Premium licensing required)
Relative link Customize a town hall in Microsoft Teams
Hope it helps, let me know if you have any other questions. And if it does not work, please let me know so we could resolve the issue together.
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