diff --git a/src/Ursa.Themes.Semi/Themes/Dark/ButtonGroup.axaml b/src/Ursa.Themes.Semi/Themes/Dark/ButtonGroup.axaml
new file mode 100644
index 0000000..6ae7f40
--- /dev/null
+++ b/src/Ursa.Themes.Semi/Themes/Dark/ButtonGroup.axaml
@@ -0,0 +1,80 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <!--  Add Resources Here  -->
+    <!--  Light  -->
+    <SolidColorBrush x:Key="ButtonGroupDefaultPrimaryForeground" Color="#54A9FF" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultSecondaryForeground" Color="#40B4F3" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultTertiaryForeground" Color="#888D92" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultSuccessForeground" Color="#5DC264" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultWarningForeground" Color="#FFAE43" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDangerForeground" Color="#FC725A" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDisabledForeground" Opacity="0.35" Color="#F9F9F9" />
+
+    <SolidColorBrush x:Key="ButtonGroupDefaultBackground" Opacity="0.12" Color="White" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPointeroverBackground" Opacity="0.16" Color="White" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPressedBackground" Opacity="0.20" Color="White" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDisabledBackground" Opacity="0.04" Color="#E6E8EA" />
+
+    <SolidColorBrush x:Key="ButtonGroupDefaultBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPointeroverBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPressedBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDisabledBorderBrush" Color="Transparent" />
+
+    <!--  end Light  -->
+
+    <!--  Solid  -->
+    <SolidColorBrush x:Key="ButtonGroupSolidForeground" Color="White" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDisabledForeground" Color="Gray" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryBackground" Color="#54A9FF" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPointeroverBackground" Color="#7FC1FF" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPressedBackground" Color="#A9D7FF" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryBackground" Color="#40B4F3" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryPointeroverBackground" Color="#6EC8F6" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryPressedBackground" Color="#9DDCF9" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryBackground" Color="#888D92" />
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryPointeroverBackground" Color="#A7ABB0" />
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryPressedBackground" Color="#C6CACD" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessBackground" Color="#5DC264" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessPointeroverBackground" Color="#7FD184" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessPressedBackground" Color="#A6E1A8" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningBackground" Color="#FFAE43" />
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningPointeroverBackground" Color="#FFC772" />
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningPressedBackground" Color="#FFDDA1" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerBackground" Color="#FC725A" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerPointeroverBackground" Color="#FD9983" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerPressedBackground" Color="#FDBEAC" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidDisabledBackground" Color="Gray" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryBorderBrush" Color="#54A9FF" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPointeroverBorderBrush" Color="#7FC1FF" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPressedBorderBrush" Color="#A9D7FF" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryBorderBrush" Color="#40B4F3" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryPointeroverBorderBrush" Color="#6EC8F6" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSecondaryPressedBorderBrush" Color="#9DDCF9" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryBorderBrush" Color="#888D92" />
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryPointeroverBorderBrush" Color="#A7ABB0" />
+    <SolidColorBrush x:Key="ButtonGroupSolidTertiaryPressedBorderBrush" Color="#C6CACD" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessBorderBrush" Color="#5DC264" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessPointeroverBorderBrush" Color="#7FD184" />
+    <SolidColorBrush x:Key="ButtonGroupSolidSuccessPressedBorderBrush" Color="#A6E1A8" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningBorderBrush" Color="#FFAE43" />
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningPointeroverBorderBrush" Color="#FFC772" />
+    <SolidColorBrush x:Key="ButtonGroupSolidWarningPressedBorderBrush" Color="#FFDDA1" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerBorderBrush" Color="#FC725A" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerPointeroverBorderBrush" Color="#FD9983" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDangerPressedBorderBrush" Color="#FDBEAC" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidDisabledBorderBrush" Color="#FF2E3238" />
+    <!--  end Solid  -->
+</ResourceDictionary>
diff --git a/src/Ursa.Themes.Semi/Themes/Dark/_index.axaml b/src/Ursa.Themes.Semi/Themes/Dark/_index.axaml
index 025d14f..c892d42 100644
--- a/src/Ursa.Themes.Semi/Themes/Dark/_index.axaml
+++ b/src/Ursa.Themes.Semi/Themes/Dark/_index.axaml
@@ -3,6 +3,7 @@
     <ResourceDictionary.MergedDictionaries>
         <MergeResourceInclude Source="Badge.axaml" />
         <MergeResourceInclude Source="Banner.axaml" />
+        <MergeResourceInclude Source="ButtonGroup.axaml" />
         <MergeResourceInclude Source="Divider.axaml" />
         <MergeResourceInclude Source="IPv4Box.axaml" />
         <MergeResourceInclude Source="Loading.axaml" />