diff --git a/Ink Canvas/MainWindow.xaml b/Ink Canvas/MainWindow.xaml
index ee61f978..1673e38d 100644
--- a/Ink Canvas/MainWindow.xaml	
+++ b/Ink Canvas/MainWindow.xaml	
@@ -8917,14 +8917,14 @@
                                             <ui:SimpleStackPanel Orientation="Horizontal" HorizontalAlignment="Center"
                                                                  Margin="0,0,0,0" Spacing="4">
                                                 <Border x:Name="CircleEraserTabButton" MouseDown="SwitchToCircleEraser"
-                                                        Background="#553b82f6" Height="20" Width="40" CornerRadius="3">
+                                                        Background="{DynamicResource FloatBarButtonBackgroundPointerOverKey}" Height="20" Width="40" CornerRadius="3">
                                                     <Canvas>
                                                         <ui:SimpleStackPanel x:Name="CircleEraserTabButtonIndicator"
                                                                              Visibility="Visible"
                                                                              Orientation="Horizontal"
                                                                              Canvas.Left="11" Canvas.Right="11"
                                                                              Canvas.Bottom="0">
-                                                            <Border Width="18" Height="2" Background="#2563eb"
+                                                            <Border Width="18" Height="2" Background="{DynamicResource FloatBarButtonButtonBackgroundPressedKey}"
                                                                     CornerRadius="1" />
                                                         </ui:SimpleStackPanel>
                                                         <ui:SimpleStackPanel Orientation="Vertical" Height="20"
@@ -8933,7 +8933,7 @@
                                                                 Orientation="Horizontal"
                                                                 HorizontalAlignment="Center" Margin="0,3">
                                                                 <TextBlock x:Name="CircleEraserTabButtonText"
-                                                                           Foreground="#172554" FontWeight="Medium"
+                                                                           Foreground="{DynamicResource FloatBarForeground}" FontWeight="Medium"
                                                                            FontSize="9" TextAlignment="Center"
                                                                            Text="圆形擦"
                                                                            Margin="2,1,0,0" />
@@ -8949,7 +8949,7 @@
                                                                              x:Name="RectangleEraserTabButtonIndicator"
                                                                              Orientation="Horizontal" Canvas.Left="11"
                                                                              Canvas.Right="11" Canvas.Bottom="0">
-                                                            <Border Width="18" Height="2" Background="#2563eb"
+                                                            <Border Width="18" Height="2" Background="{DynamicResource FloatBarButtonButtonBackgroundPressedKey}"
                                                                     CornerRadius="1" />
                                                         </ui:SimpleStackPanel>
                                                         <ui:SimpleStackPanel Orientation="Vertical" Height="20"
@@ -8958,7 +8958,7 @@
                                                                 Orientation="Horizontal"
                                                                 HorizontalAlignment="Center" Margin="0,3">
                                                                 <TextBlock x:Name="RectangleEraserTabButtonText"
-                                                                           Foreground="#172554" FontWeight="Medium"
+                                                                           Foreground="{DynamicResource FloatBarForeground}" FontWeight="Medium"
                                                                            FontSize="9" TextAlignment="Center"
                                                                            Text="黑板擦"
                                                                            Margin="2,1,0,0" />
diff --git a/Ink Canvas/Resources/Styles/Light.xaml b/Ink Canvas/Resources/Styles/Light.xaml
index 72389c2c..292ee1fc 100644
--- a/Ink Canvas/Resources/Styles/Light.xaml	
+++ b/Ink Canvas/Resources/Styles/Light.xaml	
@@ -17,9 +17,9 @@
     <SolidColorBrush x:Key="RedBrush" Color="DarkRed" />
     <SolidColorBrush x:Key="PurpleBrush" Color="DarkBlue" />
 
-    <Color x:Key="FloatBarButtonBackgroundKey">Transparent</Color>
-    <Color x:Key="FloatBarButtonBackgroundPointerOverKey">#66FFFFFF</Color>
-    <Color x:Key="FloatBarButtonButtonBackgroundPressedKey">#99FFFFFF</Color>
+    <SolidColorBrush x:Key="FloatBarButtonBackgroundKey" Color="Transparent" />
+    <SolidColorBrush x:Key="FloatBarButtonBackgroundPointerOverKey" Color="#22563eb" />
+    <SolidColorBrush x:Key="FloatBarButtonButtonBackgroundPressedKey" Color="#44563eb" />
     
     <!-- 白板模式浮动栏颜色 -->
     <SolidColorBrush x:Key="BoardFloatBarBackground" Color="#f4f4f5" />
@@ -30,6 +30,11 @@
     <SolidColorBrush x:Key="BoardFloatBarSelectedBorderBrush" Color="#2563eb" />
     <SolidColorBrush x:Key="BoardFloatBarSelectedForeground" Color="White" />
     
+    <!-- 白板模式橡皮擦按钮颜色 -->
+    <SolidColorBrush x:Key="BoardFloatBarButtonBackgroundKey" Color="Transparent" />
+    <SolidColorBrush x:Key="BoardFloatBarButtonBackgroundPointerOverKey" Color="#22563eb" />
+    <SolidColorBrush x:Key="BoardFloatBarButtonButtonBackgroundPressedKey" Color="#44563eb" />
+    
     <!-- 历史回滚窗口主题颜色 -->
     <SolidColorBrush x:Key="HistoryWindowPrimaryBrush" Color="#2563eb"/>
     <SolidColorBrush x:Key="HistoryWindowPrimaryHoverBrush" Color="#1d4ed8"/>