files/gschema-overrides/zz1-hydro-os-theming.gschema.override

@@ -0,0 +1,4 @@
+[org.gnome.desktop.interface]
+gtk-theme='Adwaita-dark' 
+color-scheme='prefer-dark'
+icon-theme='Papirus'

recipes/components/appearance-module.yml

@@ -27,3 +27,7 @@ modules:
         - breeze-icon-theme 
         - papirus-icon-theme
         - bibata-cursor-themes
+  
+  - type: gschema-overrides
+    include:
+      - zz1-hydro-os-theming.gschema.override