Gradience/src/ui/app_type_dialog.blp

using Gtk 4.0;
using Adw 1;

template AdwcustomizerAppTypeDialog : Adw.MessageDialog {
  [extra-child]
  Box {
    orientation: vertical;
    Label {
      styles ["heading"]
      label: _("Select app types you want to affect:");
    }
    CheckButton gtk4-app-type {
      label: _("Libadwaita and GTK 4 apps");
      active: true;
    }
    CheckButton gtk3-app-type {
      label: _("GTK 3 apps (adw-gtk3 theme required)");
    }
    Label {
      styles ["heading"]
      label: _("Select color mode you want to affect:");
    }
    CheckButton dark {
      label: _("Dark");
      active: true;
    }
    CheckButton light {
      label: _("Light");
    }
  }
}