diff --git a/examples/mainwindow/MainWindow.ui b/examples/mainwindow/MainWindow.ui
index 0dc3e7e..e2aa7a7 100644
--- a/examples/mainwindow/MainWindow.ui
+++ b/examples/mainwindow/MainWindow.ui
@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>MainWindow</string>
+   <string>Hello, World!</string>
   </property>
   <property name="windowIcon">
    <iconset>
diff --git a/examples/mainwindow/TitleBar.ui b/examples/mainwindow/TitleBar.ui
index af4c2c2..49484ea 100644
--- a/examples/mainwindow/TitleBar.ui
+++ b/examples/mainwindow/TitleBar.ui
@@ -130,7 +130,7 @@
       </font>
      </property>
      <property name="text">
-      <string>Window Title</string>
+      <string>Hello, World!</string>
      </property>
      <property name="alignment">
       <set>Qt::AlignCenter</set>
diff --git a/examples/mainwindow/mainwindow.cpp b/examples/mainwindow/mainwindow.cpp
index c55dd65..e0ce948 100644
--- a/examples/mainwindow/mainwindow.cpp
+++ b/examples/mainwindow/mainwindow.cpp
@@ -151,8 +151,6 @@ void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
 
 void MainWindow::setupUi()
 {
-    resize(800, 600);
-
     appMainWindow = new Ui::MainWindow;
     appMainWindow->setupUi(this);
 
@@ -183,8 +181,6 @@ void MainWindow::setupUi()
         titleBarWidget->maximizeButton->setChecked(check);
         titleBarWidget->maximizeButton->setToolTip(check ? tr("Restore") : tr("Maximize"));
     });
-
-    setWindowTitle(tr("Hello, World!"));
 }
 
 bool MainWindow::isInTitleBarDraggableArea(const QPoint &pos) const
diff --git a/examples/widget/widget.cpp b/examples/widget/widget.cpp
index bc114a5..b051694 100644
--- a/examples/widget/widget.cpp
+++ b/examples/widget/widget.cpp
@@ -75,12 +75,6 @@ static const QString mainStyleSheet = QStringLiteral(R"(#MainWidget {
 }
 )");
 
-[[nodiscard]] static inline bool isTitleBarColorized()
-{
-    const DwmColorizationArea area = Utilities::getDwmColorizationArea();
-    return ((area == DwmColorizationArea::TitleBar_WindowBorder) || (area == DwmColorizationArea::All));
-}
-
 Widget::Widget(QWidget *parent) : QWidget(parent)
 {
     setAttribute(Qt::WA_DontCreateNativeAncestors);
@@ -290,7 +284,7 @@ void Widget::updateStyleSheet()
 {
     const bool active = isActiveWindow();
     const bool dark = Utilities::shouldAppsUseDarkMode();
-    const bool colorizedTitleBar = isTitleBarColorized();
+    const bool colorizedTitleBar = Utilities::isTitleBarColorized();
     const QColor titleBarWidgetBackgroundColor = [active, colorizedTitleBar, dark]() -> QColor {
         if (active) {
             if (colorizedTitleBar) {
@@ -320,7 +314,7 @@ void Widget::updateStyleSheet()
 
 void Widget::updateSystemButtonIcons()
 {
-    const QString prefix = ((Utilities::shouldAppsUseDarkMode() || isTitleBarColorized()) ? QStringLiteral("light") : QStringLiteral("dark"));
+    const QString prefix = ((Utilities::shouldAppsUseDarkMode() || Utilities::isTitleBarColorized()) ? QStringLiteral("light") : QStringLiteral("dark"));
     m_minimizeButton->setIcon(QIcon(QStringLiteral(":/images/%1/chrome-minimize.svg").arg(prefix)));
     if (isMaximized() || isFullScreen()) {
         m_maximizeButton->setIcon(QIcon(QStringLiteral(":/images/%1/chrome-restore.svg").arg(prefix)));
diff --git a/framelesshelper_windows.h b/framelesshelper_windows.h
index ed3ce21..147963d 100644
--- a/framelesshelper_windows.h
+++ b/framelesshelper_windows.h
@@ -71,7 +71,6 @@
 #endif
 
 #include <windows.h>
-#include <uxtheme.h>
 #include <shellapi.h>
 #include <dwmapi.h>
 #include <timeapi.h>
@@ -101,6 +100,10 @@
 #  define SM_CXPADDEDBORDER (92)
 #endif
 
+#ifndef SM_CYPADDEDBORDER
+#  define SM_CYPADDEDBORDER SM_CXPADDEDBORDER
+#endif
+
 #ifndef ABM_GETAUTOHIDEBAREX
 #  define ABM_GETAUTOHIDEBAREX (0x0000000b)
 #endif
diff --git a/framelessquickhelper.cpp b/framelessquickhelper.cpp
index 001ce42..1a5460a 100644
--- a/framelessquickhelper.cpp
+++ b/framelessquickhelper.cpp
@@ -135,11 +135,7 @@ QColor FramelessQuickUtils::systemAccentColor()
 bool FramelessQuickUtils::titleBarColorVisible()
 {
 #ifdef Q_OS_WINDOWS
-    if (!Utilities::isWin10OrGreater()) {
-        return false;
-    }
-    const DwmColorizationArea area = Utilities::getDwmColorizationArea();
-    return ((area == DwmColorizationArea::TitleBar_WindowBorder) || (area == DwmColorizationArea::All));
+    return Utilities::isTitleBarColorized();
 #else
     return false;
 #endif
diff --git a/utilities.h b/utilities.h
index 4247554..86b47dc 100644
--- a/utilities.h
+++ b/utilities.h
@@ -78,6 +78,8 @@ FRAMELESSHELPER_API void showSystemMenu(const WId winId, const QPointF &pos);
 FRAMELESSHELPER_API void updateWindowFrameBorderColor(const WId winId, const bool dark);
 FRAMELESSHELPER_API void fixupQtInternals(const WId winId);
 [[nodiscard]] FRAMELESSHELPER_API bool isWindowFrameBorderVisible();
+[[nodiscard]] FRAMELESSHELPER_API bool isTitleBarColorized();
+[[nodiscard]] FRAMELESSHELPER_API bool isFrameBorderColorized();
 #endif // Q_OS_WINDOWS
 
 } // namespace Utilities
diff --git a/utilities_win32.cpp b/utilities_win32.cpp
index 38c2c2e..84592e4 100644
--- a/utilities_win32.cpp
+++ b/utilities_win32.cpp
@@ -241,8 +241,8 @@ void Utilities::updateWindowFrameMargins(const WId winId, const bool reset)
     if (!winId) {
         return;
     }
-    // DwmExtendFrameIntoClientArea() will always fail if DWM composition is disabled.
-    // No need to try in this case.
+    // We can't extend the window frame when DWM composition is disabled.
+    // No need to try further in this case.
     if (!isDwmCompositionEnabled()) {
         return;
     }
@@ -252,12 +252,9 @@ void Utilities::updateWindowFrameMargins(const WId winId, const bool reset)
     if (!pDwmExtendFrameIntoClientArea) {
         return;
     }
-    const MARGINS margins = [reset, winId]() -> MARGINS {
-        if (reset) {
+    const MARGINS margins = [reset]() -> MARGINS {
+        if (reset || isWindowFrameBorderVisible()) {
             return {0, 0, 0, 0};
-        }
-        if (isWindowFrameBorderVisible()) {
-            return {0, static_cast<int>(getTitleBarHeight(winId, true)), 0, 0};
         } else {
             return {1, 1, 1, 1};
         }
@@ -367,7 +364,7 @@ bool Utilities::shouldAppsUseDarkMode()
 
 DwmColorizationArea Utilities::getDwmColorizationArea()
 {
-    // It's a Win10 only feature.
+    // It's a Win10 only feature. (TO BE VERIFIED)
     if (!isWin10OrGreater()) {
         return DwmColorizationArea::None;
     }
@@ -686,11 +683,12 @@ quint32 Utilities::getResizeBorderThickness(const WId winId, const bool horizont
     if (!winId) {
         return 0;
     }
-    const int paddedBorderWidth = getSystemMetrics2(winId, SM_CXPADDEDBORDER, true, scaled);
     if (horizontal) {
-        return (getSystemMetrics2(winId, SM_CXSIZEFRAME, true, scaled) + paddedBorderWidth);
+        return (getSystemMetrics2(winId, SM_CXSIZEFRAME, true, scaled)
+                + getSystemMetrics2(winId, SM_CXPADDEDBORDER, true, scaled));
     } else {
-        return (getSystemMetrics2(winId, SM_CYSIZEFRAME, false, scaled) + paddedBorderWidth);
+        return (getSystemMetrics2(winId, SM_CYSIZEFRAME, false, scaled)
+                + getSystemMetrics2(winId, SM_CYPADDEDBORDER, false, scaled));
     }
 }
 
@@ -750,11 +748,10 @@ QColor Utilities::getFrameBorderColor(const bool active)
     }
     const bool dark = shouldAppsUseDarkMode();
     if (active) {
-        const DwmColorizationArea area = getDwmColorizationArea();
-        if ((area == DwmColorizationArea::TitleBar_WindowBorder) || (area == DwmColorizationArea::All)) {
+        if (isFrameBorderColorized()) {
             return getDwmColorizationColor();
         } else {
-            return (dark ? QColor(QStringLiteral("#4d4d4d")) : QColor(Qt::white));
+            return (dark ? QColor(QStringLiteral("#4d4d4d")) : QColor(Qt::black));
         }
     } else {
         return (dark ? QColor(QStringLiteral("#575959")) : QColor(QStringLiteral("#a6a6a6")));
@@ -771,29 +768,18 @@ void Utilities::updateWindowFrameBorderColor(const WId winId, const bool dark)
     if (!isWin101809OrGreater()) {
         return;
     }
-    static const auto pSetWindowTheme =
-        reinterpret_cast<decltype(&SetWindowTheme)>(
-            QSystemLibrary::resolve(QStringLiteral("uxtheme"), "SetWindowTheme"));
     static const auto pDwmSetWindowAttribute =
         reinterpret_cast<decltype(&DwmSetWindowAttribute)>(
             QSystemLibrary::resolve(QStringLiteral("dwmapi"), "DwmSetWindowAttribute"));
-    if (!pSetWindowTheme || !pDwmSetWindowAttribute) {
+    if (!pDwmSetWindowAttribute) {
         return;
     }
     const auto hwnd = reinterpret_cast<HWND>(winId);
     const BOOL value = (dark ? TRUE : FALSE);
-    HRESULT hr = pDwmSetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1, &value, sizeof(value));
-    if (FAILED(hr)) {
-        // Just eat this error, because it only works on systems before Win10 20H1.
-    }
-    hr = pDwmSetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE, &value, sizeof(value));
-    if (FAILED(hr)) {
-        // Eat this error, it only works on systems greater than or equal to Win10 20H1.
-    }
-    hr = pSetWindowTheme(hwnd, (dark ? L"DarkMode_Explorer" : L" "), nullptr);
-    if (FAILED(hr)) {
-        qWarning() << __getSystemErrorMessage(QStringLiteral("SetWindowTheme"), hr);
-    }
+    // Whether dark window frame is available or not depends on the runtime system version,
+    // it's totally OK if it's not available, so just ignore the errors.
+    pDwmSetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1, &value, sizeof(value));
+    pDwmSetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE, &value, sizeof(value));
 }
 
 void Utilities::fixupQtInternals(const WId winId)
@@ -885,4 +871,19 @@ bool Utilities::isWindowFrameBorderVisible()
     return result;
 }
 
+bool Utilities::isTitleBarColorized()
+{
+    // CHECK: is it supported on win7?
+    if (!isWin10OrGreater()) {
+        return false;
+    }
+    const DwmColorizationArea area = getDwmColorizationArea();
+    return ((area == DwmColorizationArea::TitleBar_WindowBorder) || (area == DwmColorizationArea::All));
+}
+
+bool Utilities::isFrameBorderColorized()
+{
+    return isTitleBarColorized();
+}
+
 FRAMELESSHELPER_END_NAMESPACE