diff --git a/data/web/promote.telegram.org.html b/data/web/promote.telegram.org.html
index 2f7ab4a3ef..de900a7b46 100644
--- a/data/web/promote.telegram.org.html
+++ b/data/web/promote.telegram.org.html
@@ -22,7 +22,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -101,14 +101,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
 Ads.init();
diff --git a/data/web/promote.telegram.org/auth.html b/data/web/promote.telegram.org/auth.html
index c9e8aba9ac..f1a20720ba 100644
--- a/data/web/promote.telegram.org/auth.html
+++ b/data/web/promote.telegram.org/auth.html
@@ -22,7 +22,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -101,14 +101,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 openPopup('#login-popup-container');
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
diff --git a/data/web/promote.telegram.org/basics.html b/data/web/promote.telegram.org/basics.html
index 2f7ab4a3ef..de900a7b46 100644
--- a/data/web/promote.telegram.org/basics.html
+++ b/data/web/promote.telegram.org/basics.html
@@ -22,7 +22,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -101,14 +101,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
 Ads.init();
diff --git a/data/web/promote.telegram.org/css/widget-frame.css b/data/web/promote.telegram.org/css/widget-frame.css
index 8929b75790..eef83fa5ad 100644
--- a/data/web/promote.telegram.org/css/widget-frame.css
+++ b/data/web/promote.telegram.org/css/widget-frame.css
@@ -61,8 +61,6 @@ body {
   --color6: #cd4073; /* pink */
 
   --spoiler-bgcolor: #e3e5e8;
-
-  color-scheme: light;
 }
 body.dark,
 html.theme_dark body {
@@ -99,8 +97,6 @@ html.theme_dark body {
   --color6: #ff5ead; /* pink */
 
   --spoiler-bgcolor: #373e4e;
-
-  color-scheme: dark;
 }
 
 body.widget_frame_base {
diff --git a/data/web/promote.telegram.org/getting-started.html b/data/web/promote.telegram.org/getting-started.html
index f415831a71..05f97795e3 100644
--- a/data/web/promote.telegram.org/getting-started.html
+++ b/data/web/promote.telegram.org/getting-started.html
@@ -23,7 +23,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -222,14 +222,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
 Ads.init();
diff --git a/data/web/promote.telegram.org/guidelines.html b/data/web/promote.telegram.org/guidelines.html
index 1ced94fc30..2d1877afe6 100644
--- a/data/web/promote.telegram.org/guidelines.html
+++ b/data/web/promote.telegram.org/guidelines.html
@@ -22,7 +22,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -218,14 +218,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
 Ads.init();
diff --git a/data/web/promote.telegram.org/js/widget-frame.js b/data/web/promote.telegram.org/js/widget-frame.js
index e3a932c57a..bbce1e02aa 100644
--- a/data/web/promote.telegram.org/js/widget-frame.js
+++ b/data/web/promote.telegram.org/js/widget-frame.js
@@ -2517,6 +2517,10 @@ function checkFrameSize() {
         addClass(document.body, 'no_transitions');
         toggleClass(document.body, 'dark', !!new_options.dark);
         toggleClass(document.body, 'nodark', !new_options.dark);
+        var root = document.documentElement;
+        if (root && root.style) {
+          root.style.colorScheme = !new_options.dark ? 'light' : 'dark';
+        }
       }
       if (transition_off) {
         setTimeout(function() {
diff --git a/data/web/promote.telegram.org/tos.html b/data/web/promote.telegram.org/tos.html
index 38cd9d48a9..4112bd1689 100644
--- a/data/web/promote.telegram.org/tos.html
+++ b/data/web/promote.telegram.org/tos.html
@@ -23,7 +23,7 @@
     <link href="//telegram.org/css/bootstrap.min.css?3" rel="stylesheet">
     <link href="//telegram.org/css/bootstrap-extra.css?2" rel="stylesheet">
     <link href="/css/telegram.css?236" rel="stylesheet">
-<link href="/css/widget-frame.css?65" rel="stylesheet">
+<link href="/css/widget-frame.css?66" rel="stylesheet">
 <link href="/css/promote.css?61" rel="stylesheet">
 <link href="/css/jquery-ui.min.css?1" rel="stylesheet">
 <link href="/css/tchart.min.css?10" rel="stylesheet">
@@ -154,14 +154,14 @@
     <script src="//telegram.org/js/jquery.min.js?1"></script>
     <script src="//telegram.org/js/bootstrap.min.js"></script>
     <script src="//telegram.org/js/main-aj.js?67"></script>
-    <script src="/js/widget-frame.js?60"></script>
+    <script src="/js/widget-frame.js?61"></script>
 <script src="/js/promote.js?53"></script>
 <script src="/js/jquery-ui.min.js?1"></script>
 <script src="/js/jquery-ex.js?14"></script>
 <script src="/js/tchart.min.js?18"></script>
 <script src="/js/health.js?18"></script>
 
-    <script>ajInit({"version":846,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
+    <script>ajInit({"version":848,"apiUrl":"\/api?hash=telegram-crawler","unauth":true});</script>
     <script id="aj_script">l.add({"WEB_AB_WARNING_HEADER":"Turn off ad blocker","WEB_POPUP_CLOSE_BTN":"Close","WEB_AB_WARNING_TEXT":"You appear to be using an ad blocker that may prevent pages on the Telegram Ad Platform from working as expected.<br\/><br\/>Please turn off your ad blocker or add <a href=\"http:\/\/promote.telegram.org\/\">promote.telegram.org<\/a> as an exception to manage your promoted messages."});
 window.enableInlineVideo&&$('video').each(function(){enableInlineVideo(this)});
 Ads.init();