Thank you for your suggestion! We really appreciate the feedback and idea. We have reviewed this request and started working on it. I’ll let you know as it nears completion.
I’m excited to let everyone know that a new build that saves the theme setting is rolling out this week! I’ll mark completed once it’s fully rolled out.
Thanks for your patience!Mike commented
Theme setting remains when minimizing the Teams window, when closing the Teams Window (X in upper right of title bar). But the theme setting is reset to default when logging out (aka Sign Out) of Teams and when exiting (aka Quit) Teams.