updating module format and additional settings

modules/darwin/system/appearance.nix

@@ -0,0 +1,35 @@
+{ config, pkgs, lib, ... }:
+{  
+  # If you also want to do e.g. Dock preferences from the same user-level file:
+  system.defaults.dock = {
+    autohide = true;
+    orientation = "bottom";
+    persistent-apps = [
+      /Applications/Safari.app
+      /System/Applications/Utilities/Terminal.app
+      # Add your persistent apps here
+    ];
+    persistent-others = [
+      # Add your persistent others here
+      "~/Documents"
+      "~/code"
+    ];
+    show-recents = false;
+    tilesize = 36; # Set the icon size on the dock; default is 64
+  };
+
+
+system.defaults.NSGlobalDomain = {
+    AppleInterfaceStyle = "Dark";     # "Dark" or "Light" - Darkmode all the things
+    AppleHighlightColor = "Purple";   # Set highlight color
+    # Add more NSGlobalDomain settings here
+  };
+
+  system.defaults.loginwindow = {
+    GuestEnabled = false; # Disable guest account
+    AdminHostInfo = "HostName"; # Show hostname on login window
+    AdminHostInfoTime = true; # Show time on login window
+    LoginwindowText = "Super Awesome Mac"; # Set login window text
+    # Add more loginwindow settings here
+    };
+}