Also, not sure if a dark mode checkbox should be added or if dark mode should be automatically set based on the loaded theme in Wine. Though, for the latter there needs to be a property that returns the mode of the theme. Name alone might not be sufficient.
I understand it's not entirely relevant to this MR, but have you considered implementing support for the `org.freedesktop.appearance.color-scheme` specification? It's used by GNOME, KDE, elementary, Firefox/Thunderbird, and Telegram Desktop so far. Probably others I didn't mention as well.
Relevant links: - GNOME blog post: https://blogs.gnome.org/alexm/2021/10/04/dark-style-preference/ - Spec: https://github.com/flatpak/xdg-desktop-portal/blob/d7a304a00697d7d608821253c... - KDE initial implementation: https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/merge_requests/49 - KDE proper implementation: https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/merge_requests/52