use imports and split programs into their own files for organization

users/josh/theme/gtk.nix

@@ -0,0 +1,25 @@
+{ pkgs, ... }:
+{
+  gtk = {
+    enable = true;
+
+    cursorTheme = {
+      name = "Numix-Cursor";
+      package = pkgs.numix-cursor-theme;
+    };
+
+    gtk3.extraConfig = {
+      Settings = ''
+        	gtk-application-prefer-dark-theme=1
+      '';
+    };
+
+    gtk4.extraConfig = {
+      Settings = ''
+        	gtk-application-prefer-dark-theme=1
+      '';
+    };
+  };
+
+  home.sessionVariables.GTK_THEME = "palenight";
+}