Use adw-gtk3-dark theme in GNOME

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/a1fddf0967c33754271761d91a3d921772b30d0e' (2024-06-16)
  → 'github:nix-community/home-manager/391ca6e950c2525b4f853cbe29922452c14eda82' (2024-07-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/89c49874fb15f4124bf71ca5f42a04f2ee5825fd' (2024-06-26)
  → 'github:NixOS/nixpkgs/7dca15289a1c2990efbe4680f0923ce14139b042' (2024-06-30)
• Updated input 'nixpkgs-unstable':
    'github:NixOS/nixpkgs/b2852eb9365c6de48ffb0dc2c9562591f652242a' (2024-06-27)
  → 'github:NixOS/nixpkgs/2741b4b489b55df32afac57bc4bfd220e8bf617e' (2024-06-29)

flake.lock

@@ -332,11 +332,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1718530513,
-        "narHash": "sha256-BmO8d0r+BVlwWtMLQEYnwmngqdXIuyFzMwvmTcLMee8=",
+        "lastModified": 1719827385,
+        "narHash": "sha256-qs+nU20Sm8czHg3bhGCqiH+8e13BJyRrKONW34g3i50=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "a1fddf0967c33754271761d91a3d921772b30d0e",
+        "rev": "391ca6e950c2525b4f853cbe29922452c14eda82",
         "type": "github"
       },
       "original": {
@@ -462,11 +462,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1719506693,
-        "narHash": "sha256-C8e9S7RzshSdHB7L+v9I51af1gDM5unhJ2xO1ywxNH8=",
+        "lastModified": 1719690277,
+        "narHash": "sha256-0xSej1g7eP2kaUF+JQp8jdyNmpmCJKRpO12mKl/36Kc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b2852eb9365c6de48ffb0dc2c9562591f652242a",
+        "rev": "2741b4b489b55df32afac57bc4bfd220e8bf617e",
         "type": "github"
       },
       "original": {
@@ -493,11 +493,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1719426051,
-        "narHash": "sha256-yJL9VYQhaRM7xs0M867ZFxwaONB9T2Q4LnGo1WovuR4=",
+        "lastModified": 1719707984,
+        "narHash": "sha256-RoxIr/fbndtuKqulGvNCcuzC6KdAib85Q8gXnjzA1dw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "89c49874fb15f4124bf71ca5f42a04f2ee5825fd",
+        "rev": "7dca15289a1c2990efbe4680f0923ce14139b042",
         "type": "github"
       },
       "original": {

modules/desktop/gnome.nix

@@ -25,10 +25,11 @@ in {
         draggable-video-area-enable = true;
       };
       "org/gnome/desktop/interface" = {
+        color-scheme = "prefer-dark";
         cursor-theme = "Adwaita";
         enable-hot-corners = false;
         font-name = "Cantarell 11";
-        gtk-theme = "Adwaita";
+        gtk-theme = "adw-gtk3-dark";
         icon-theme = "MoreWaita";
         monospace-font-name = "UbuntuMono Nerd Font 11";
         toolbar-style = "both-horiz";