diff --git a/src/Ursa.Themes.Semi/Themes/Dark/Dialog.axaml b/src/Ursa.Themes.Semi/Themes/Dark/Dialog.axaml
index 733792a..c8a82a2 100644
--- a/src/Ursa.Themes.Semi/Themes/Dark/Dialog.axaml
+++ b/src/Ursa.Themes.Semi/Themes/Dark/Dialog.axaml
@@ -1,3 +1,3 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    <SolidColorBrush x:Key="OverlayDialogMaskBrush" Color="#FFA7ABB0" Opacity="0.2" />
+    <SolidColorBrush x:Key="OverlayDialogMaskBrush" Color="#FF16161A" Opacity="0.6" />
 </ResourceDictionary>
\ No newline at end of file
diff --git a/src/Ursa.Themes.Semi/Themes/Light/Dialog.axaml b/src/Ursa.Themes.Semi/Themes/Light/Dialog.axaml
index a981986..c8a82a2 100644
--- a/src/Ursa.Themes.Semi/Themes/Light/Dialog.axaml
+++ b/src/Ursa.Themes.Semi/Themes/Light/Dialog.axaml
@@ -1,3 +1,3 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    <SolidColorBrush x:Key="OverlayDialogMaskBrush" Color="#FF555B61" Opacity="0.2" />
+    <SolidColorBrush x:Key="OverlayDialogMaskBrush" Color="#FF16161A" Opacity="0.6" />
 </ResourceDictionary>
\ No newline at end of file