Re-opening this ticket, as a user running WAIL in dark mode is problematic:

The darkdetect module provides a way to determine the mode, which would allow us to manually change the coloration (at least to be legible) until wxPython supports it.

https://wxpython.org/Phoenix/docs/html/wx.SystemAppearance.html introduced in wxPython 4.1 (April 2020) introduces ability to read the system state re:dark mode but not set it for Windows. Building using this version of wxPython while in dark mode still results in a light-colored window.

I am unable to replicate the above issue on August 28, 2019 on macOS 10.15.5 from the latest release version 0.2019.05.21.

EDIT: Similar effect when building from the latest primary (osagnostic) branch, f27f91e, so perhaps it was a bug with the imported modules or OS at the time.

On macOS, setting

	<key>NSRequiresAquaSystemAppearance</key>
	<false/>

makes an app "dark mode aware". Doing this with the .app built from source (above), makes the UI visually adaptive.

So, despite explicit support for a flag in wxPython, this can likely be manually set in the .plist that is copied over in the build process.