Problem

The subplot configuration tool is currently white background/black text when macOS is in dark mode. It would be nice to apply a dark style sheet when macOS is in dark mode. This is using the macosx backend, but might be an issue for other backends (but not QT AFAIK).

import matplotlib.pyplot as plt
plt.figure()
plt.show()

Proposed solution

Apply a dark style sheet to the configuration tool when macOS is in dark mode.