diff --git a/PixivFSUWP/App.xaml b/PixivFSUWP/App.xaml
index 584b1dd..d6b650d 100644
--- a/PixivFSUWP/App.xaml
+++ b/PixivFSUWP/App.xaml
@@ -14,7 +14,7 @@
             </ResourceDictionary.ThemeDictionaries>
         <converters:MultiPageVisibilityConverter x:Name="MultiPageVisibilityConverter"/>
         <converters:BookmarkHeartVisibilityConverter x:Name="BookmarkHeartVisibilityConverter"/>
-        <AcrylicBrush x:Name="PageBackGround" BackgroundSource="HostBackdrop" TintColor="{ThemeResource SystemAltHighColor}" TintOpacity="0.5" FallbackColor="{ThemeResource SystemAltHighColor}"/>
+        <AcrylicBrush x:Name="PageBackGround" BackgroundSource="HostBackdrop" TintColor="{ThemeResource SystemAltHighColor}" TintOpacity="{ThemeResource PageBackGroundTintOpacity}" FallbackColor="{ThemeResource SystemAltHighColor}"/>
         <ControlTemplate x:Name="ScrollViewerScrollBarlessTemplate" TargetType="ScrollViewer">
             <Grid Background="{TemplateBinding Background}">
                 <ScrollContentPresenter x:Name="ScrollContentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Margin="{TemplateBinding Padding}"/>
diff --git a/PixivFSUWP/Themes/Dark.xaml b/PixivFSUWP/Themes/Dark.xaml
index 8715f36..0c199ab 100644
--- a/PixivFSUWP/Themes/Dark.xaml
+++ b/PixivFSUWP/Themes/Dark.xaml
@@ -4,4 +4,5 @@
     xmlns:local="using:PixivFSUWP.Themes">
     <x:String x:Key="PixivHeader">/Assets/PixivHeader_L.png</x:String>
     <x:String x:Key="PixivText">/Assets/PixivText_L.png</x:String>
+    <x:Double x:Key="PageBackGroundTintOpacity">0.5</x:Double>
 </ResourceDictionary>
diff --git a/PixivFSUWP/Themes/Light.xaml b/PixivFSUWP/Themes/Light.xaml
index 8b173e4..e3518b8 100644
--- a/PixivFSUWP/Themes/Light.xaml
+++ b/PixivFSUWP/Themes/Light.xaml
@@ -4,4 +4,5 @@
     xmlns:local="using:PixivFSUWP.Themes">
     <x:String x:Key="PixivHeader">/Assets/PixivHeader.png</x:String>
     <x:String x:Key="PixivText">/Assets/PixivText.png</x:String>
+    <x:Double x:Key="PageBackGroundTintOpacity">0.7</x:Double>
 </ResourceDictionary>