diff --git a/ModernWpf.Controls/CommandBarFlyout/CommandBarFlyout.xaml b/ModernWpf.Controls/CommandBarFlyout/CommandBarFlyout.xaml
index eb8d9480..1f6d6627 100644
--- a/ModernWpf.Controls/CommandBarFlyout/CommandBarFlyout.xaml
+++ b/ModernWpf.Controls/CommandBarFlyout/CommandBarFlyout.xaml
@@ -945,7 +945,7 @@
     </Style>
 
     <Style TargetType="primitives:CommandBarFlyoutCommandBar">
-        <Setter Property="Background" Value="{DynamicResource SystemControlAcrylicElementBrush}" />
+        <Setter Property="Background" Value="{DynamicResource SystemControlTransientAcrylicElementBrush}" />
         <Setter Property="Foreground" Value="{DynamicResource SystemControlForegroundBaseHighBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource SystemControlTransientBorderBrush}" />
         <Setter Property="BorderThickness" Value="{DynamicResource CommandBarFlyoutBorderThemeThickness}" />
diff --git a/ModernWpf/ThemeResources/Dark.xaml b/ModernWpf/ThemeResources/Dark.xaml
index 01a44e86..09bad059 100644
--- a/ModernWpf/ThemeResources/Dark.xaml
+++ b/ModernWpf/ThemeResources/Dark.xaml
@@ -146,6 +146,10 @@
     <SolidColorBrush x:Key="SystemControlErrorTextForegroundBrush" Color="{m:StaticColor SystemErrorTextColor}" />
     <SolidColorBrush x:Key="SystemControlTransientBorderBrush" Color="#000000" Opacity="0.36" />
     <SolidColorBrush x:Key="SystemControlTransientBackgroundBrush" Color="{m:StaticColor SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientAcrylicElementBrush" Color="{StaticResource SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientBackgroundInverseBrush" Color="#F2F2F2" />
+    <SolidColorBrush x:Key="SystemControlBaseAcrylicBrush" Color="{StaticResource SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlDefaultBrighteningBrush" Color="#FFFFFF" Opacity="0.0419"/>
     <m:StaticResource x:Key="SystemControlDescriptionTextForegroundBrush" ResourceKey="SystemControlPageTextBaseMediumBrush" />
 
     <!-- Acrylic Brushes -->
@@ -823,9 +827,9 @@
     <m:StaticResource x:Key="MenuFlyoutSubItemRevealBorderBrushDisabled" ResourceKey="SystemControlTransparentBrush" />
 
     <!-- Resources for NavigationView -->
-    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlAcrylicElementBrush" />
+    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
     <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="{m:StaticColor SystemChromeMediumColor}" />
-    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlChromeMediumLowAcrylicElementMediumBrush" />
+    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
 
     <m:StaticResource x:Key="NavigationViewItemBackground" ResourceKey="SystemControlTransparentRevealBackgroundBrush" />
     <m:StaticResource x:Key="NavigationViewItemBackgroundPointerOver" ResourceKey="SystemControlHighlightListLowRevealBackgroundBrush" />
diff --git a/ModernWpf/ThemeResources/HighContrast.xaml b/ModernWpf/ThemeResources/HighContrast.xaml
index da08ec64..451bd272 100644
--- a/ModernWpf/ThemeResources/HighContrast.xaml
+++ b/ModernWpf/ThemeResources/HighContrast.xaml
@@ -144,8 +144,12 @@
     <SolidColorBrush x:Key="SystemControlPageTextChromeBlackMediumLowBrush" Color="{m:ThemeResource SystemColorWindowTextColor}" />
     <SolidColorBrush x:Key="SystemControlTransparentBrush" Color="Transparent" />
     <SolidColorBrush x:Key="SystemControlErrorTextForegroundBrush" Color="{m:ThemeResource SystemColorWindowTextColor}" />
-    <m:StaticResource x:Key="SystemControlTransientBorderBrush" ResourceKey="SystemControlForegroundChromeHighBrush" />
-    <SolidColorBrush x:Key="SystemControlTransientBackgroundBrush" Color="{StaticResource SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientBorderBrush" Color="{m:ThemeResource SystemColorWindowTextColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientBackgroundBrush" Color="{m:ThemeResource SystemColorWindowColor}"/>
+    <SolidColorBrush x:Key="SystemControlTransientAcrylicElementBrush" Color="{m:ThemeResource SystemColorWindowColor}"/>
+    <SolidColorBrush x:Key="SystemControlTransientBackgroundInverseBrush" Color="{m:ThemeResource SystemColorWindowTextColor}" />
+    <SolidColorBrush x:Key="SystemControlBaseAcrylicBrush" Color="{m:ThemeResource SystemColorWindowColor}"/>
+    <SolidColorBrush x:Key="SystemControlDefaultBrighteningBrush" Color="{m:ThemeResource SystemColorWindowColor}"/>
     <m:StaticResource x:Key="SystemControlDescriptionTextForegroundBrush" ResourceKey="SystemControlPageTextBaseMediumBrush" />
 
     <!-- Acrylic Brushes -->
@@ -823,9 +827,9 @@
     <m:StaticResource x:Key="MenuFlyoutSubItemRevealBorderBrushDisabled" ResourceKey="SystemControlTransparentBrush" />
 
     <!-- Resources for NavigationView -->
-    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlAcrylicElementBrush" />
+    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
     <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="{m:ThemeResource SystemColorWindowColor}" />
-    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlChromeMediumLowAcrylicElementMediumBrush" />
+    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
 
     <m:StaticResource x:Key="NavigationViewItemBackground" ResourceKey="SystemControlBackgroundBaseLowBrush" />
     <m:StaticResource x:Key="NavigationViewItemBackgroundPointerOver" ResourceKey="SystemControlHighlightListLowRevealBackgroundBrush" />
diff --git a/ModernWpf/ThemeResources/Light.xaml b/ModernWpf/ThemeResources/Light.xaml
index 9ea0b147..fa84d95e 100644
--- a/ModernWpf/ThemeResources/Light.xaml
+++ b/ModernWpf/ThemeResources/Light.xaml
@@ -146,6 +146,10 @@
     <SolidColorBrush x:Key="SystemControlErrorTextForegroundBrush" Color="{m:StaticColor SystemErrorTextColor}" />
     <SolidColorBrush x:Key="SystemControlTransientBorderBrush" Color="#000000" Opacity="0.14" />
     <SolidColorBrush x:Key="SystemControlTransientBackgroundBrush" Color="{m:StaticColor SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientAcrylicElementBrush" Color="{StaticResource SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlTransientBackgroundInverseBrush" Color="#2B2B2B" />
+    <SolidColorBrush x:Key="SystemControlBaseAcrylicBrush" Color="{StaticResource SystemChromeMediumLowColor}" />
+    <SolidColorBrush x:Key="SystemControlDefaultBrighteningBrush" Color="#FFFFFF" Opacity="0.5"/>
     <m:StaticResource x:Key="SystemControlDescriptionTextForegroundBrush" ResourceKey="SystemControlPageTextBaseMediumBrush" />
 
     <!-- Acrylic Brushes -->
@@ -823,9 +827,9 @@
     <m:StaticResource x:Key="MenuFlyoutSubItemRevealBorderBrushDisabled" ResourceKey="SystemControlTransparentBrush" />
 
     <!-- Resources for NavigationView -->
-    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlAcrylicElementBrush" />
+    <m:StaticResource x:Key="NavigationViewDefaultPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
     <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="{m:StaticColor SystemChromeMediumColor}" />
-    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlChromeMediumLowAcrylicElementMediumBrush" />
+    <m:StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="SystemControlTransientAcrylicElementBrush" />
 
     <m:StaticResource x:Key="NavigationViewItemBackground" ResourceKey="SystemControlTransparentRevealBackgroundBrush" />
     <m:StaticResource x:Key="NavigationViewItemBackgroundPointerOver" ResourceKey="SystemControlHighlightListLowRevealBackgroundBrush" />