diff --git a/home/browsers/firefox/userChrome.css b/home/browsers/firefox/chrome/theme/colors.css
similarity index 78%
rename from home/browsers/firefox/userChrome.css
rename to home/browsers/firefox/chrome/theme/colors.css
index 277cfa6..065ef5c 100644
--- a/home/browsers/firefox/userChrome.css
+++ b/home/browsers/firefox/chrome/theme/colors.css
@@ -4,7 +4,7 @@
     .tabbrowser-tab[selected="true"] .tab-background {
       border: 1px solid #313244 !important;
     }
-    --toolbar-bgcolor: rgb(30, 30, 46) !important;
+    --toolbar-bgcolor: rgb(24, 24, 37) !important;
     --toolbox-non-lwt-bgcolor: rgb(17, 17, 27) !important;
     --toolbox-non-lwt-textcolor: rgb(205, 214, 244) !important;
     --input-bgcolor: rgb(24, 24, 37) !important;
@@ -18,36 +18,36 @@
     .tab-background[multiselected] {
       --focus-outline-color: rgb(49, 50, 68);
     }
-    --arrowpanel-background: rgb(30, 30, 46) !important;
+    --arrowpanel-background: rgb(49, 50, 68) !important;
     --arrowpanel-color: rgb(205, 214, 244) !important;
     --toolbarbutton-active-background: rgb(108, 112, 134) !important;
     &:where([tabsintitlebar]) {
       --toolbox-non-lwt-bgcolor-inactive: rgb(17, 17, 27) !important;
     }
-    --toolbarbutton-icon-fill-attention: rgb(249, 226, 175) !important;
+    --toolbarbutton-icon-fill-attention: rgb(205, 214, 244) !important;
     --toolbarbutton-icon-fill: rgb(205, 214, 244) !important;
     --arrowpanel-border-color: rgb(49, 50, 68) !important;
     --urlbarView-highlight-color: rgb(205, 214, 244) !important;
     --urlbarView-highlight-background: rgb(108, 112, 134) !important;
     #tabbrowser-tabs {
-      --tab-loading-fill: rgb(249, 226, 175) !important;
+      --tab-loading-fill: rgb(205, 214, 244) !important;
     }
     --tab-selected-bgcolor: rgb(30, 30, 46) !important;
     --tab-selected-textcolor: rgb(205, 214, 244) !important;
-    --chrome-content-separator-color: rgb(30, 30, 46) !important;
+    --chrome-content-separator-color: rgb(49, 50, 68) !important;
     --toolbar-field-focus-border-color: rgb(49, 50, 68) !important;
     --input-border-color: rgb(49, 50, 68) !important;
     --toolbar-field-border-color: var(--input-border-color) !important;
     --toolbar-field-focus-background-color: rgb(30, 30, 46) !important;
     #urlbar-input:focus::selection,
     .searchbar-textbox:focus::selection {
-      color: rgb(30, 30, 46);
+      color: rgb(49, 50, 68);
     }
     #urlbar-input:focus::selection,
     .searchbar-textbox:focus::selection {
-      background-color: rgb(249, 226, 175);
+      background-color: rgb(205, 214, 244);
     }
-    --toolbarseparator-color: rgb(249, 226, 175) !important;
+    --toolbarseparator-color: rgb(205, 214, 244) !important;
   }
 }
 
@@ -57,7 +57,7 @@
     .tabbrowser-tab[selected="true"] .tab-background {
       border: 1px solid #ccd0da !important;
     }
-    --toolbar-bgcolor: rgb(239, 241, 245) !important;
+    --toolbar-bgcolor: rgb(230, 233, 239) !important;
     --toolbox-non-lwt-bgcolor: rgb(220, 224, 232) !important;
     --toolbox-non-lwt-textcolor: rgb(76, 79, 105) !important;
     --input-bgcolor: rgb(230, 233, 239) !important;
@@ -65,11 +65,11 @@
     --input-color: rgb(76, 79, 105) !important;
     --toolbar-field-color: var(--input-color) !important;
     .tab-background[selected]:not([multiselected]) {
-      outline: 1px solid rgb(223, 142, 29);
+      outline: 1px solid rgb(76, 79, 105);
       outline-offset: -1px;
     }
     .tab-background[multiselected] {
-      --focus-outline-color: rgb(223, 142, 29);
+      --focus-outline-color: rgb(76, 79, 105);
     }
     --arrowpanel-background: rgb(239, 241, 245) !important;
     --arrowpanel-color: rgb(76, 79, 105) !important;
@@ -77,29 +77,29 @@
     &:where([tabsintitlebar]) {
       --toolbox-non-lwt-bgcolor-inactive: rgb(220, 224, 232) !important;
     }
-    --toolbarbutton-icon-fill-attention: rgb(223, 142, 29) !important;
+    --toolbarbutton-icon-fill-attention: rgb(76, 79, 105) !important;
     --toolbarbutton-icon-fill: rgb(76, 79, 105) !important;
-    --arrowpanel-border-color: rgb(223, 142, 29) !important;
+    --arrowpanel-border-color: rgb(76, 79, 105) !important;
     --urlbarView-highlight-color: rgb(76, 79, 105) !important;
     --urlbarView-highlight-background: rgb(156, 160, 176) !important;
     #tabbrowser-tabs {
-      --tab-loading-fill: rgb(223, 142, 29) !important;
+      --tab-loading-fill: rgb(76, 79, 105) !important;
     }
     --tab-selected-bgcolor: rgb(239, 241, 245) !important;
     --tab-selected-textcolor: rgb(76, 79, 105) !important;
     --chrome-content-separator-color: rgb(239, 241, 245) !important;
-    --toolbar-field-focus-border-color: rgb(223, 142, 29) !important;
+    --toolbar-field-focus-border-color: rgb(76, 79, 105) !important;
     --input-border-color: rgb(239, 241, 245) !important;
     --toolbar-field-border-color: var(--input-border-color) !important;
     --toolbar-field-focus-background-color: rgb(239, 241, 245) !important;
     #urlbar-input:focus::selection,
     .searchbar-textbox:focus::selection {
-      color: rgb(239, 241, 245);
+      color: rgb(204, 208, 218);
     }
     #urlbar-input:focus::selection,
     .searchbar-textbox:focus::selection {
-      background-color: rgb(223, 142, 29);
+      background-color: rgb(76, 79, 105);
     }
-    --toolbarseparator-color: rgb(223, 142, 29) !important;
+    --toolbarseparator-color: rgb(76, 79, 105) !important;
   }
 }
diff --git a/home/browsers/firefox/chrome/theme/hide.css b/home/browsers/firefox/chrome/theme/hide.css
new file mode 100644
index 0000000..938830c
--- /dev/null
+++ b/home/browsers/firefox/chrome/theme/hide.css
@@ -0,0 +1,7 @@
+#tracking-protection-icon-container {
+  display: none;
+}
+
+.bookmark-item[container] {
+  list-style-image: url("chrome://global/skin/dirListing/folder.png") !important;
+}
diff --git a/home/browsers/firefox/chrome/userChrome.css b/home/browsers/firefox/chrome/userChrome.css
new file mode 100644
index 0000000..46cf3bf
--- /dev/null
+++ b/home/browsers/firefox/chrome/userChrome.css
@@ -0,0 +1,2 @@
+@import "./theme/colors.css";
+@import "./theme/hide.css";
diff --git a/home/browsers/firefox/default.nix b/home/browsers/firefox/default.nix
index 9da1d6b..34752d9 100644
--- a/home/browsers/firefox/default.nix
+++ b/home/browsers/firefox/default.nix
@@ -1,11 +1,17 @@
 # https://discourse.nixos.org/t/combining-best-of-system-firefox-and-home-manager-firefox-settings/37721
-{ pkgs, ... }:
+# https://discourse.nixos.org/t/declare-firefox-extensions-and-settings/36265
+{ pkgs, config, ... }:
 
 {
   home.sessionVariables = rec {
     MOZ_GMP_PATH = "${pkgs.widevine-firefox}/gmp-widevinecdm/system-installed";
   };
 
+  home.file.".mozilla/firefox/default/chrome" = {
+    source = ./chrome;
+    force = true;
+  };
+
   programs.firefox = {
     enable = true;
     package = pkgs.firefox.override {
@@ -13,12 +19,68 @@
         pkgs.firefoxpwa
       ];
     };
+    policies = {
+      BlockAboutConfig = true;
+      DefaultDownloadDirectory = "\${home}/Downloads";
+      # Check about:support for extension/add-on ID strings.
+      # Valid strings for installation_mode are "allowed", "blocked",
+      # "force_installed" and "normal_installed".
+      ExtensionSettings = {
+        "*" = {
+          "installation_mode" = "blocked";
+        };
+        "uBlock0@raymondhill.net" = {
+          installation_mode = "allowed";
+        };
+        "gdpr@cavi.au.dk" = {
+          installation_mode = "allowed";
+        };
+        "{5cce4ab5-3d47-41b9-af5e-8203eea05245}" = {
+          installation_mode = "allowed";
+        };
+        "plasma-browser-integration@kde.org" = {
+          installation_mode = "allowed";
+        };
+        "jid1-MnnxcxisBPnSXQ@jetpack" = {
+          installation_mode = "allowed";
+        };
+        "firefoxpwa@filips.si" = {
+          installation_mode = "allowed";
+        };
+        "sponsorBlocker@ajay.app" = {
+          installation_mode = "allowed";
+        };
+        "{7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}" = {
+          installation_mode = "allowed";
+        };
+        "{aecec67f-0d10-4fa7-b7c7-609a2db280cf}" = {
+          installation_mode = "allowed";
+        };
+      };
+      DisableTelemetry = true;
+      DisableFirefoxStudies = true;
+      EnableTrackingProtection = {
+        Value = true;
+        Locked = true;
+        Cryptomining = true;
+        Fingerprinting = true;
+      };
+      DisablePocket = true;
+      DisableFirefoxAccounts = false;
+      DisableAccounts = false;
+      DisableFirefoxScreenshots = true;
+      OverrideFirstRunPage = "";
+      OverridePostUpdatePage = "";
+      DontCheckDefaultBrowser = true;
+      DisplayBookmarksToolbar = "newtab"; # alternatives: "always" or "newtab"
+      DisplayMenuBar = "always"; # alternatives: "always", "never" or "default-on"
+      SearchBar = "unified"; # alternative: "separate"
+    };
     profiles = {
       default = {
         id = 0;
         name = "default";
         isDefault = true;
-        userChrome = ./userChrome.css;
         extensions = {
           force = true;
           packages = with pkgs.nur.repos.rycee.firefox-addons; [