theming_patch

--- adw-style-manager.c 2023-10-06 14:43:01.839834997 -0600
+++ adw-style-manager-1.c   2023-10-06 15:42:30.413324079 -0600
@@ -227,6 +227,20 @@
   g_object_notify_by_pspec (G_OBJECT (self), props[PROP_HIGH_CONTRAST]);
 }

+adw_style_manager_theme_changed(GSettings *settings, const char *key, GdkDisplay *display)
+{
+  char *theme = g_settings_get_string(settings, "gtk-theme");
+  if (!theme) {
+    theme = "Adwaita-empty";
+  }
+  gboolean is_dark_variant = NULL != strstr(theme, "-dark");
+
+  g_object_set (gtk_settings_get_for_display (display),
+                "gtk-theme-name", theme,
+                "gtk-application-prefer-dark-theme", is_dark_variant,
+                NULL);
+}
+
 static void
 adw_style_manager_constructed (GObject *object)
 {
@@ -238,9 +252,6 @@
     GtkSettings *settings = gtk_settings_get_for_display (self->display);
     gboolean prefer_dark_theme;

-    g_object_get (settings,
-                  "gtk-application-prefer-dark-theme", &prefer_dark_theme,
-                  NULL);

     if (prefer_dark_theme)
       warn_prefer_dark_theme (self);
@@ -255,16 +266,16 @@
       g_object_set (gtk_settings_get_for_display (self->display),
                     "gtk-theme-name", "Adwaita-empty",
                     NULL);
+
+    GSettingsSchemaSource *schema_source =
+        g_settings_schema_source_get_default();
+    GSettingsSchema *schema = g_settings_schema_source_lookup(
+        schema_source, "org.gnome.desktop.interface", true);
+    GSettings *interface_settings = g_settings_new_full(schema, NULL, NULL);
+
+    adw_style_manager_theme_changed(interface_settings, "gtk-theme", self->display);
+    g_signal_connect (interface_settings, "changed", G_CALLBACK (adw_style_manager_theme_changed), self->display);

-      self->provider = gtk_css_provider_new ();
-      gtk_style_context_add_provider_for_display (self->display,
-                                                  GTK_STYLE_PROVIDER (self->provider),
-                                                  GTK_STYLE_PROVIDER_PRIORITY_THEME);
-
-      self->colors_provider = gtk_css_provider_new ();
-      gtk_style_context_add_provider_for_display (self->display,
-                                                  GTK_STYLE_PROVIDER (self->colors_provider),
-                                                  GTK_STYLE_PROVIDER_PRIORITY_THEME);
     }

     self->animations_provider = gtk_css_provider_new ();