diff --git a/src/Avalonia.Themes.Default/CaptionButtons.xaml b/src/Avalonia.Themes.Default/CaptionButtons.xaml
index c47ab05fd6..49a32f9598 100644
--- a/src/Avalonia.Themes.Default/CaptionButtons.xaml
+++ b/src/Avalonia.Themes.Default/CaptionButtons.xaml
@@ -17,7 +17,7 @@
               <Setter Property="Background" Value="Transparent" />
             </Style>
             <Style Selector="Panel:pointerover.captionButton">
-              <Setter Property="Background" Value="#7f7f7f7f" />
+              <Setter Property="Background" Value="Red" />
             </Style>
             <Style Selector="Panel#PART_CloseButton:pointerover">
               <Setter Property="Background" Value="#AFFF0000" />
diff --git a/src/Avalonia.Themes.Fluent/CaptionButtons.xaml b/src/Avalonia.Themes.Fluent/CaptionButtons.xaml
index 7ed27a1747..282448bdd5 100644
--- a/src/Avalonia.Themes.Fluent/CaptionButtons.xaml
+++ b/src/Avalonia.Themes.Fluent/CaptionButtons.xaml
@@ -12,10 +12,10 @@
               <Setter Property="Background" Value="Transparent" />
             </Style>
             <Style Selector="Panel:pointerover">
-              <Setter Property="Background" Value="#CFFFFFFF" />
+              <Setter Property="Background" Value="#7F7f7f7f" />
             </Style>
             <Style Selector="Panel#PART_CloseButton:pointerover">
-              <Setter Property="Background" Value="#AFFF0000" />
+              <Setter Property="Background" Value="#7FFF0000" />
             </Style>
             <Style Selector="Viewbox">
               <Setter Property="Width" Value="11" />