diff --git a/demo/Semi.Avalonia.Demo/Pages/ColorPickerDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/ColorPickerDemo.axaml
index 3eb407d..9e6f238 100644
--- a/demo/Semi.Avalonia.Demo/Pages/ColorPickerDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/ColorPickerDemo.axaml
@@ -2,8 +2,7 @@
     x:Class="Semi.Avalonia.Demo.Pages.ColorPickerDemo"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:colorPicker="clr-namespace:Semi.Avalonia.ColorPicker;assembly=Semi.Avalonia.ColorPicker"
-    xmlns:controls="using:Avalonia.Controls"
+    xmlns:semi="https://irihi.tech/semi"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     d:DesignHeight="1450"
@@ -33,12 +32,12 @@
             <StackPanel HorizontalAlignment="Left" Orientation="Horizontal">
                 <ColorPicker Margin="8" ColorSpectrumShape="Ring">
                     <ColorPicker.Palette>
-                        <controls:FlatHalfColorPalette />
+                        <FlatHalfColorPalette />
                     </ColorPicker.Palette>
                 </ColorPicker>
                 <ColorPicker Margin="8" ColorSpectrumShape="Box">
                     <ColorPicker.Palette>
-                        <colorPicker:SemiColorLightPalette />
+                        <semi:SemiColorLightPalette />
                     </ColorPicker.Palette>
                 </ColorPicker>
 
@@ -47,7 +46,7 @@
                     ColorSpectrumShape="Box"
                     Theme="{DynamicResource HexColorPicker}">
                     <ColorPicker.Palette>
-                        <colorPicker:SemiColorLightPalette />
+                        <semi:SemiColorLightPalette />
                     </ColorPicker.Palette>
                 </ColorPicker>
             </StackPanel>
diff --git a/src/Semi.Avalonia.ColorPicker/AssemblyInfo.cs b/src/Semi.Avalonia.ColorPicker/AssemblyInfo.cs
new file mode 100644
index 0000000..2c1c8f9
--- /dev/null
+++ b/src/Semi.Avalonia.ColorPicker/AssemblyInfo.cs
@@ -0,0 +1,3 @@
+using Avalonia.Metadata;
+
+[assembly: XmlnsDefinition("https://irihi.tech/semi", "Semi.Avalonia.ColorPicker")]
\ No newline at end of file
diff --git a/src/Semi.Avalonia.ColorPicker/Shared.axaml b/src/Semi.Avalonia.ColorPicker/Shared.axaml
index 0b4d319..6c95410 100644
--- a/src/Semi.Avalonia.ColorPicker/Shared.axaml
+++ b/src/Semi.Avalonia.ColorPicker/Shared.axaml
@@ -1,7 +1,7 @@
 <ResourceDictionary
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:colorPicker="clr-namespace:Semi.Avalonia.ColorPicker">
+    xmlns:semi="https://irihi.tech/semi">
     <FontWeight x:Key="ColorViewRadioButtonFontWeight">600</FontWeight>
     <Thickness x:Key="ColorViewRadioButtonPadding">16 4</Thickness>
     <x:Double x:Key="ColorViewNumericUpDownWidth">70</x:Double>
@@ -23,7 +23,7 @@
     <x:Double x:Key="ColorPreviewerHeight">48</x:Double>
     <CornerRadius x:Key="ColorPreviewerCornerRadius">3</CornerRadius>
 
-    <colorPicker:SemiColorDarkPalette x:Key="SemiColorPalette" />
+    <semi:SemiColorDarkPalette x:Key="SemiColorPalette" />
 
     <PlacementMode x:Key="ColorPickerFlyoutPlacement">AnchorAndGravity</PlacementMode>
     <PlacementMode x:Key="SimpleColorPickerFlyoutPlacement">BottomEdgeAlignedLeft</PlacementMode>