diff --git a/src/userContent.scss b/src/userContent.scss
index 0e00ce2..e8e5fee 100644
--- a/src/userContent.scss
+++ b/src/userContent.scss
@@ -12,12 +12,18 @@
 @import "contents/activity_stream";
 
 /** Error Page - Restore illustrations ****************************************/
-@import "contents/error_page";
+@include Option("userContent.page.illustration") {
+  @import "contents/error_page";
+}
 
 /** Fully Dark Mode ***********************************************************/
 /*= Fully Dark Mode - Dark Mode Colors =======================================*/
 @import "theme/proton_color";
-@import "contents/dark_mode";
+@include Option("userContent.page.dark_mode") {
+  @import "contents/dark_mode";
+}
 
 /** Fully Proton Mode *********************************************************/
-@import "contents/proton_contents";
+@include Option("userContent.page.proton") {
+  @import "contents/proton_contents";
+}
diff --git a/user.js b/user.js
index f0540d6..9ae4be7 100644
--- a/user.js
+++ b/user.js
@@ -94,6 +94,10 @@ user_pref("userContent.player.noaudio",       true);
 user_pref("userContent.player.size",          true);
 user_pref("userContent.player.click_to_play", true);
 
+user_pref("userContent.error.illustration", true);
+user_pref("userContent.page.dark_mode",     true);
+user_pref("userContent.page.proton",        true);
+
 // ** Useful Options ***********************************************************
 // Integrated calculator at urlbar
 user_pref("browser.urlbar.suggest.calculator", true);