diff --git a/src/Views/About.axaml b/src/Views/About.axaml
index 9c9f0a9f..237ee85e 100644
--- a/src/Views/About.axaml
+++ b/src/Views/About.axaml
@@ -26,7 +26,7 @@
         <Button Classes="caption_button_macos" Click="CloseWindow">
           <Grid>
             <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
-            <Path Height="7" Width="7" Stretch="Fill" Data="{StaticResource Icons.MacOS.Close}"/>
+            <Path Height="7" Width="7" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Close}"/>
           </Grid>
         </Button>
       </Grid>
diff --git a/src/Views/AssumeUnchangedManager.axaml b/src/Views/AssumeUnchangedManager.axaml
index b7c59691..53117cbf 100644
--- a/src/Views/AssumeUnchangedManager.axaml
+++ b/src/Views/AssumeUnchangedManager.axaml
@@ -28,7 +28,7 @@
         <Button Classes="caption_button_macos" Click="CloseWindow">
           <Grid>
             <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
-            <Path Height="7" Width="7" Stretch="Fill" Data="{StaticResource Icons.MacOS.Close}"/>
+            <Path Height="7" Width="7" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Close}"/>
           </Grid>
         </Button>
       </Grid>
diff --git a/src/Views/CaptionButtonsMacOS.axaml b/src/Views/CaptionButtonsMacOS.axaml
index fa3f1f34..68e3a5e8 100644
--- a/src/Views/CaptionButtonsMacOS.axaml
+++ b/src/Views/CaptionButtonsMacOS.axaml
@@ -12,19 +12,19 @@
       <Button Classes="caption_button_macos" Click="CloseWindow" Margin="10,0,0,0">
         <Grid>
           <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
-          <Path Height="7" Width="7" Stretch="Fill" Data="{StaticResource Icons.MacOS.Close}"/>
+          <Path Height="7" Width="7" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Close}"/>
         </Grid>
       </Button>
       <Button Classes="caption_button_macos" Click="MinimizeWindow">
         <Grid>
           <Ellipse Fill="{DynamicResource Brush.MacOS.Minimize}"/>
-          <Path Height="2" Width="8" Stretch="Fill" Data="{StaticResource Icons.MacOS.Minimize}"/>
+          <Path Height="2" Width="8" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Minimize}"/>
         </Grid>
       </Button>
       <Button Classes="caption_button_macos" Click="MaximizeOrRestoreWindow">
         <Grid>
           <Ellipse Fill="{DynamicResource Brush.MacOS.Maximize}"/>
-          <Path Height="8" Width="8" Stretch="Fill" Data="{StaticResource Icons.MacOS.Maximize}}"/>
+          <Path Height="8" Width="8" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Maximize}}"/>
         </Grid>
       </Button>
     </StackPanel>
diff --git a/src/Views/Preference.axaml b/src/Views/Preference.axaml
index 8573dd6d..305f567b 100644
--- a/src/Views/Preference.axaml
+++ b/src/Views/Preference.axaml
@@ -34,7 +34,7 @@
         <Button Classes="caption_button_macos" Click="CloseWindow">
           <Grid>
             <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
-            <Path Height="7" Width="7" Stretch="Fill" Data="{StaticResource Icons.MacOS.Close}"/>
+            <Path Height="7" Width="7" Stretch="Fill" Fill="#80000000" Data="{StaticResource Icons.MacOS.Close}"/>
           </Grid>
         </Button>
       </Grid>