diff --git a/src/lib/app/mainapplication.cpp b/src/lib/app/mainapplication.cpp
index 8eaf9f3f1..7edac1fc5 100644
--- a/src/lib/app/mainapplication.cpp
+++ b/src/lib/app/mainapplication.cpp
@@ -399,8 +399,10 @@ void MainApplication::loadSettings()
     m_websettings->setAttribute(QWebSettings::JavascriptCanCloseWindows, settings.value("allowJavaScriptCloseWindow", false).toBool());
 #endif
 
+    const QUrl &styleSheet = userStyleSheet(settings.value("userStyleSheet", QString()).toString(),
+                                            settings.value("ignoreSystemColors", false).toBool());
+    m_websettings->setUserStyleSheetUrl(styleSheet);
     setWheelScrollLines(settings.value("wheelScrollLines", wheelScrollLines()).toInt());
-    m_websettings->setUserStyleSheetUrl(userStyleSheet(settings.value("userStyleSheet", QString()).toString()));
     settings.endGroup();
 
     settings.beginGroup("Browser-Fonts");
@@ -834,7 +836,8 @@ void MainApplication::reloadUserStyleSheet()
 {
     Settings settings;
     settings.beginGroup("Web-Browser-Settings");
-    m_websettings->setUserStyleSheetUrl(userStyleSheet(settings.value("userStyleSheet", QString()).toString()));
+    m_websettings->setUserStyleSheetUrl(userStyleSheet(settings.value("userStyleSheet", QString()).toString(),
+                                        settings.value("ignoreSystemColors", false).toBool()));
     settings.endGroup();
 }
 
@@ -880,11 +883,18 @@ RegisterQAppAssociation* MainApplication::associationManager()
 }
 #endif
 
-QUrl MainApplication::userStyleSheet(const QString &filePath) const
+QUrl MainApplication::userStyleSheet(const QString &filePath, bool ignoreSystemColors) const
 {
-    // Set default white background for all sites
-    // Fixes issue with dark themes when sites don't set background
-    QString userStyle = "html{background-color:white;}";
+    QString userStyle;
+
+    if (ignoreSystemColors) {
+        // Set default white background for all sites
+        // Fixes issue with dark themes when sites don't set background
+        // But it also brings issues with background of iframes that assumes
+        // background will by default will be transparent
+        userStyle += "html{background-color:white;}";
+    }
+
     userStyle += AdBlockManager::instance()->elementHidingRules() + "{ display:none !important;}";
 
     QFile file(filePath);
diff --git a/src/lib/app/mainapplication.h b/src/lib/app/mainapplication.h
index 7925ed653..890be4cd7 100644
--- a/src/lib/app/mainapplication.h
+++ b/src/lib/app/mainapplication.h
@@ -148,7 +148,7 @@ private:
     void translateApp();
     void restoreOtherWindows();
 
-    QUrl userStyleSheet(const QString &filePath) const;
+    QUrl userStyleSheet(const QString &filePath, bool ignoreSystemColors) const;
 
     CookieManager* m_cookiemanager;
     BrowsingLibrary* m_browsingLibrary;
diff --git a/src/lib/preferences/preferences.cpp b/src/lib/preferences/preferences.cpp
index 2aa981ae6..594c568d2 100644
--- a/src/lib/preferences/preferences.cpp
+++ b/src/lib/preferences/preferences.cpp
@@ -253,6 +253,7 @@ Preferences::Preferences(QupZilla* mainClass, QWidget* parent)
     ui->wheelScroll->setValue(settings.value("wheelScrollLines", qApp->wheelScrollLines()).toInt());
     ui->defaultZoom->setValue(settings.value("DefaultZoom", 100).toInt());
     ui->xssAuditing->setChecked(settings.value("XSSAuditing", false).toBool());
+    ui->ignoreSystemColors->setChecked(settings.value("ignoreSystemColors", false).toBool());
 
     //Cache
     ui->pagesInCache->setValue(settings.value("maximumCachedPages", 3).toInt());
@@ -898,6 +899,7 @@ void Preferences::saveSettings()
     settings.setValue("LoadTabsOnActivation", ui->dontLoadTabsUntilSelected->isChecked());
     settings.setValue("DefaultZoom", ui->defaultZoom->value());
     settings.setValue("XSSAuditing", ui->xssAuditing->isChecked());
+    settings.setValue("ignoreSystemColors", ui->ignoreSystemColors->isChecked());
 #ifdef Q_OS_WIN
     settings.setValue("CheckDefaultBrowser", ui->checkDefaultBrowser->isChecked());
 #endif
diff --git a/src/lib/preferences/preferences.ui b/src/lib/preferences/preferences.ui
index e1d1b11a9..c301e4594 100644
--- a/src/lib/preferences/preferences.ui
+++ b/src/lib/preferences/preferences.ui
@@ -596,11 +596,11 @@
            <item row="9" column="0" colspan="2">
             <widget class="QLabel" name="label_7">
              <property name="text">
-              <string>&lt;b&gt;Background&lt;b/&gt;</string>
+              <string>&lt;b&gt;Colors&lt;b/&gt;</string>
              </property>
             </widget>
            </item>
-           <item row="11" column="1">
+           <item row="12" column="1">
             <spacer name="verticalSpacer_12">
              <property name="orientation">
               <enum>Qt::Vertical</enum>
@@ -641,6 +641,13 @@
              </property>
             </widget>
            </item>
+           <item row="11" column="1">
+            <widget class="QCheckBox" name="ignoreSystemColors">
+             <property name="text">
+              <string>Ignore system colors (for dark themes)</string>
+             </property>
+            </widget>
+           </item>
           </layout>
          </widget>
         </widget>