My appbar is a dark color, so the text on the app bar is white. I'm also using the light theme. But when I click the ... to view secondary toolbaritems, the text on each item is white and the background is a very light grey. I just want to be able to change this background to a different color.
I tried editing the CommandBarOverflowPresenter's Background property in app.xaml, MenuFlyoutPresenter, etc, but it has no effect.