Earlier, Microsoft released the Microsoft Office series component beta on the iOS platform, inviting some users to participate in the new version of the dark mode test. These versions are now released with the official channel and support all iOS version 13 users. If the user system is set to dark mode, the components will also switch to dark mode.
Slightly regrettable is that Microsoft has not added the switch to manually switch between light and dark mode, that is, what mode is set by the system. In addition, even though the overall appearance of each component has been adapted to the dark mode.