diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo.Android/SystemThemesDemo.Android.csproj b/UserInterface/SystemThemesDemo/SystemThemesDemo.Android/SystemThemesDemo.Android.csproj
index 068fd39c74..3d49c88029 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo.Android/SystemThemesDemo.Android.csproj
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo.Android/SystemThemesDemo.Android.csproj
@@ -53,7 +53,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.800" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.967" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="MainActivity.cs" />
diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo.iOS/SystemThemesDemo.iOS.csproj b/UserInterface/SystemThemesDemo/SystemThemesDemo.iOS/SystemThemesDemo.iOS.csproj
index 787498db0f..22afa1c392 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo.iOS/SystemThemesDemo.iOS.csproj
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo.iOS/SystemThemesDemo.iOS.csproj
@@ -123,7 +123,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.800" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.967" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
   <ItemGroup>
diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo/App.xaml b/UserInterface/SystemThemesDemo/SystemThemesDemo/App.xaml
index 99b74dbb86..f89aa9b57b 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo/App.xaml
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo/App.xaml
@@ -7,44 +7,39 @@
              x:Class="SystemThemesDemo.App">
     <Application.Resources>
 
-        <AppThemeColor x:Key="PageBackgroundColor"
-                       Light="White"
-                       Dark="Black" />
-        <AppThemeColor x:Key="NavigationBarColor"
-                       Light="WhiteSmoke"
-                       Dark="Teal" />
-        <AppThemeColor x:Key="PrimaryColor"
-                       Light="WhiteSmoke"
-                       Dark="Teal" />
-        <AppThemeColor x:Key="SecondaryColor"
-                       Light="Black"
-                       Dark="White" />
-        <AppThemeColor x:Key="PrimaryTextColor"
-                       Light="Black"
-                       Dark="White" />
-        <AppThemeColor x:Key="SecondaryTextColor"
-                       Light="White"
-                       Dark="White" />
-        <AppThemeColor x:Key="TertiaryTextColor"
-                       Light="Gray"
-                       Dark="WhiteSmoke" />
-        <AppThemeColor x:Key="TransparentColor"
-                       Light="Transparent"
-                       Dark="Transparent" />
+        <Color x:Key="TransparentColor">Transparent</Color>
+
+        <!-- Light colors -->
+        <Color x:Key="LightPageBackgroundColor">White</Color>
+        <Color x:Key="LightNavigationBarColor">WhiteSmoke</Color>
+        <Color x:Key="LightPrimaryColor">WhiteSmoke</Color>
+        <Color x:Key="LightSecondaryColor">Black</Color>
+        <Color x:Key="LightPrimaryTextColor">Black</Color>
+        <Color x:Key="LightSecondaryTextColor">White</Color>
+        <Color x:Key="LightTertiaryTextColor">Gray</Color>
+
+        <!-- Dark colors -->
+        <Color x:Key="DarkPageBackgroundColor">Black</Color>
+        <Color x:Key="DarkNavigationBarColor">Teal</Color>
+        <Color x:Key="DarkPrimaryColor">Teal</Color>
+        <Color x:Key="DarkSecondaryColor">White</Color>
+        <Color x:Key="DarkPrimaryTextColor">White</Color>
+        <Color x:Key="DarkSecondaryTextColor">White</Color>
+        <Color x:Key="DarkTertiaryTextColor">WhiteSmoke</Color>
 
         <Style TargetType="NavigationPage">
             <Setter Property="BarBackgroundColor"
-                    Value="{DynamicResource NavigationBarColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightNavigationBarColor}, Dark={StaticResource DarkNavigationBarColor}}" />
             <Setter Property="BarTextColor"
-                    Value="{DynamicResource SecondaryColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightSecondaryColor}, Dark={StaticResource DarkSecondaryColor}}" />
         </Style>
 
         <Style x:Key="ButtonStyle"
                TargetType="Button">
             <Setter Property="BackgroundColor"
-                    Value="{DynamicResource PrimaryColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightPrimaryColor}, Dark={StaticResource DarkPrimaryColor}}" />
             <Setter Property="TextColor"
-                    Value="{DynamicResource SecondaryColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightSecondaryColor}, Dark={StaticResource DarkSecondaryColor}}" />
             <Setter Property="HeightRequest"
                     Value="45" />
             <Setter Property="WidthRequest"
@@ -56,7 +51,7 @@
         <Style x:Key="LargeLabelStyle"
                TargetType="Label">
             <Setter Property="TextColor"
-                    Value="{DynamicResource SecondaryTextColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightSecondaryTextColor}, Dark={StaticResource DarkSecondaryTextColor}}" />
             <Setter Property="FontSize"
                     Value="30" />
         </Style>
@@ -64,7 +59,7 @@
         <Style x:Key="MediumLabelStyle"
                TargetType="Label">
             <Setter Property="TextColor"
-                    Value="{DynamicResource PrimaryTextColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightPrimaryTextColor}, Dark={StaticResource DarkPrimaryTextColor}}" />
             <Setter Property="FontSize"
                     Value="25" />
         </Style>
@@ -72,7 +67,7 @@
         <Style x:Key="SmallLabelStyle"
                TargetType="Label">
             <Setter Property="TextColor"
-                    Value="{DynamicResource TertiaryTextColor}" />
+                    Value="{AppThemeBinding Light={StaticResource LightTertiaryTextColor}, Dark={StaticResource DarkTertiaryTextColor}}" />
             <Setter Property="FontSize"
                     Value="15" />
         </Style>
diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo/SystemThemesDemo.csproj b/UserInterface/SystemThemesDemo/SystemThemesDemo/SystemThemesDemo.csproj
index 642d6d18b5..00bd772da8 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo/SystemThemesDemo.csproj
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo/SystemThemesDemo.csproj
@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.800" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.967" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Images\" />
diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserDetailsPage.xaml b/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserDetailsPage.xaml
index b2627cc91c..dc4f2203c7 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserDetailsPage.xaml
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserDetailsPage.xaml
@@ -4,7 +4,7 @@
              xmlns:local="clr-namespace:SystemThemesDemo"
              x:Class="SystemThemesDemo.Views.UserDetailsPage"
              Title="User Details"
-             BackgroundColor="{DynamicResource PageBackgroundColor}">
+             BackgroundColor="{AppThemeBinding Light={StaticResource LightPageBackgroundColor}, Dark={StaticResource DarkPageBackgroundColor}}">
     <ScrollView>
         <Grid>
             <Grid.RowDefinitions>
@@ -15,7 +15,7 @@
             </Grid.RowDefinitions>
             <Image Source="{local:ImageResource SystemThemesDemo.Images.FacePalm.jpg}"
                    Aspect="AspectFill" />
-            <Grid BackgroundColor="{DynamicResource TransparentBackgroundColor}">
+            <Grid BackgroundColor="{StaticResource TransparentColor}">
                 <Label VerticalOptions="End"
                        Margin="15"
                        Style="{StaticResource LargeLabelStyle}">
diff --git a/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserSummaryPage.xaml b/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserSummaryPage.xaml
index 1d9d7d0bb8..d3502261f0 100644
--- a/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserSummaryPage.xaml
+++ b/UserInterface/SystemThemesDemo/SystemThemesDemo/Views/UserSummaryPage.xaml
@@ -4,7 +4,7 @@
              xmlns:local="clr-namespace:SystemThemesDemo"
              x:Class="SystemThemesDemo.Views.UserSummaryPage"
              Title="User Summary"
-             BackgroundColor="{DynamicResource PageBackgroundColor}">
+             BackgroundColor="{AppThemeBinding Light={StaticResource LightPageBackgroundColor}, Dark={StaticResource DarkPageBackgroundColor}}">
     <ScrollView>
         <Grid>
             <Grid.RowDefinitions>
@@ -12,7 +12,7 @@
                 <RowDefinition Height="120" />
                 <RowDefinition Height="70" />
             </Grid.RowDefinitions>
-            <Grid BackgroundColor="{DynamicResource PrimaryColor}">
+            <Grid BackgroundColor="{AppThemeBinding Light={StaticResource LightPrimaryColor}, Dark={StaticResource DarkPrimaryColor}}">
                 <Label Text="Face-Palm Monkey"
                        VerticalOptions="Center"
                        Margin="15"
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.Android/MarkupExtensions.Android.csproj b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.Android/MarkupExtensions.Android.csproj
index f4670b4b03..9065b29593 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.Android/MarkupExtensions.Android.csproj
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.Android/MarkupExtensions.Android.csproj
@@ -43,7 +43,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms">
-      <Version>4.6.0.726</Version>
+      <Version>4.6.0.967</Version>
     </PackageReference>
   </ItemGroup>
   <ItemGroup>
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.UWP/MarkupExtensions.UWP.csproj b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.UWP/MarkupExtensions.UWP.csproj
index ab23ab8d06..936147767c 100755
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.UWP/MarkupExtensions.UWP.csproj
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.UWP/MarkupExtensions.UWP.csproj
@@ -90,7 +90,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.0.12" />
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.726" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.967" />
   </ItemGroup>
   <ItemGroup />
   <ItemGroup>
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.iOS/MarkupExtensions.iOS.csproj b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.iOS/MarkupExtensions.iOS.csproj
index 37753e18a6..9c7ba6c623 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.iOS/MarkupExtensions.iOS.csproj
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions.iOS/MarkupExtensions.iOS.csproj
@@ -134,7 +134,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms">
-      <Version>4.6.0.726</Version>
+      <Version>4.6.0.967</Version>
     </PackageReference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml
similarity index 71%
rename from XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml
rename to XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml
index dffeeba8f8..8f50b97536 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml
@@ -1,20 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="MarkupExtensions.OnAppThemeDemoPage"
-             Title="OnAppTheme Demo">
+             x:Class="MarkupExtensions.AppThemeBindingDemoPage"
+             Title="AppThemeBinding Demo">
     <ContentPage.Resources>
 
         <Style x:Key="labelStyle"
                TargetType="Label">
             <Setter Property="TextColor"
-                    Value="{OnAppTheme Black, Light=Blue, Dark=Teal}" />
+                    Value="{AppThemeBinding Black, Light=Blue, Dark=Teal}" />
         </Style>
 
     </ContentPage.Resources>
     <StackLayout Margin="20">
         <Label Text="This text is green in light mode, and red in dark mode."
-               TextColor="{OnAppTheme Light=Green, Dark=Red}" />
+               TextColor="{AppThemeBinding Light=Green, Dark=Red}" />
         <Label Text="This text is black by default, blue in light mode, and teal in dark mode."
                Style="{DynamicResource labelStyle}" />
     </StackLayout>
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml.cs b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml.cs
similarity index 54%
rename from XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml.cs
rename to XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml.cs
index 1c4110a805..60f7f0d05b 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/OnAppThemeDemoPage.xaml.cs
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/AppThemeBindingDemoPage.xaml.cs
@@ -2,9 +2,9 @@
 
 namespace MarkupExtensions
 {
-    public partial class OnAppThemeDemoPage : ContentPage
+    public partial class AppThemeBindingDemoPage : ContentPage
     {
-        public OnAppThemeDemoPage()
+        public AppThemeBindingDemoPage()
         {
             InitializeComponent();
         }
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MainPage.xaml b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MainPage.xaml
index 906ab8b161..b61b0a5ddd 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MainPage.xaml
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MainPage.xaml
@@ -53,10 +53,10 @@
                           Command="{Binding NavigateCommand}"
                           CommandParameter="{x:Type local:HslColorDemoPage}" />
 
-                <TextCell Text="OnAppTheme Demo"
+                <TextCell Text="AppThemeBinding Demo"
                           Detail="Specify resources per system theme"
                           Command="{Binding NavigateCommand}"
-                          CommandParameter="{x:Type local:OnAppThemeDemoPage}" />
+                          CommandParameter="{x:Type local:AppThemeBindingDemoPage}" />
 
                 <TextCell Text="Image Resource Demo"
                           Detail="Use a custom markup extension to access bitmaps"
diff --git a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MarkupExtensions.csproj b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MarkupExtensions.csproj
index 264126076c..8e23dbb60f 100644
--- a/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MarkupExtensions.csproj
+++ b/XAML/MarkupExtensions/MarkupExtensions/MarkupExtensions/MarkupExtensions.csproj
@@ -47,6 +47,6 @@
     <Compile Remove="OnPlatformPage.xaml.cs" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.726" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.967" />
   </ItemGroup>
 </Project>
diff --git a/XAML/MarkupExtensions/Screenshots/09AppThemeBindingDemo.png b/XAML/MarkupExtensions/Screenshots/09AppThemeBindingDemo.png
new file mode 100644
index 0000000000..85dc4dfb34
Binary files /dev/null and b/XAML/MarkupExtensions/Screenshots/09AppThemeBindingDemo.png differ