diff --git a/.config/home-manager/firefox.nix b/.config/home-manager/firefox.nix
new file mode 100644
index 0000000..af74dbe
--- /dev/null
+++ b/.config/home-manager/firefox.nix
@@ -0,0 +1,43 @@
+{ config
+, pkgs
+, lib
+, ...
+}:
+let
+  darkreaderHost = pkgs.runCommand "darkreader-host" {} ''
+    mkdir -p $out/bin
+    ${pkgs.gcc}/bin/gcc -O2 -o $out/bin/darkreader ${./files/coloreader-native.c}
+  '';
+  darkreaderManifest = {
+    name = "darkreader";
+    description = "custom darkreader native host for syncing with pywal";
+    path = "${darkreaderHost}/bin/darkreader";
+    type = "stdio";
+  };
+in
+{
+  config.home.file = {
+    ".mozilla/native-messaging-hosts/darkreader.json".text = builtins.toJSON
+      (darkreaderManifest // { allowed_extensions = [ "darkreader@alexhulbert.com" ]; });
+  };
+
+  config.home.activation.firefoxWalTheme = lib.hm.dag.entryAfter ["writeBoundary"] ''
+    ln -sf "${config.xdg.cacheHome}/wal/userContent.css" \
+      "${config.home.homeDirectory}/.mozilla/firefox/default/chrome/userContent.css"
+  '';
+  config.programs.firefox = {
+  enable = false;
+  profiles.default = {
+    id = 0;
+    name = "default";
+    isDefault = true;
+    settings = {
+      "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+    };
+    userChrome = ''
+      @import url('userContent.css');
+    '';
+  };
+};
+
+}
diff --git a/.config/matugen/config.toml b/.config/matugen/config.toml
index ae7edc2..130e6e2 100644
--- a/.config/matugen/config.toml
+++ b/.config/matugen/config.toml
@@ -53,3 +53,8 @@ output_path = "~/.config/Mailspring/packages/Matugen/styles/ui-variables.less"
 [templates.millennium]
 input_path = "~/.config/matugen/templates/millennium-material-matugen.css"
 output_path = '~/.steam/steam/steamui/skins/Material-Theme/css/main/colors/matugen.css'
+
+[templates.spotify]
+input_path = '~/.config/matugen/templates/spicetify.ini'
+output_path = '~/.config/spicetify/Themes/Sleek/color.ini'
+post_hook = 'spicetify watch -s 2>&1 | sed "/Reloaded Spotify/q"'
diff --git a/.config/niri/config.kdl b/.config/niri/config.kdl
index 02b6bd4..082ef20 100644
--- a/.config/niri/config.kdl
+++ b/.config/niri/config.kdl
@@ -276,8 +276,8 @@ window-rule {
     match app-id=r#"^org\.gnome\.Nautilus$"#
     match app-id="fsearch"
     match app-id="feishin"
+    match app-id="spotify"
     match app-id="MstyStudio"
-
 }
 
 window-rule {