Support GNOME 42 dark theme preference
This works on Debian Testing or Ubuntu 22.04 Alpha.
Make sure your theme is not already set to Adwaita-Dark or Yaru-Dark . You need the non-dark theme set.
gsettings set org.gnome.desktop.interface color-scheme 'prefer-light'
gsettings set org.gnome.desktop.interface color-scheme 'prefer-dark'