Update MainWindow.axaml

samples/ColorPickerDemo/MainWindow.axaml

@@ -7,7 +7,7 @@
         mc:Ignorable="d" d:DesignWidth="550" d:DesignHeight="350"
         x:Class="ColorPickerDemo.MainWindow"
         Title="ColorPickerDemo"
-        Width="800" Height="450"
+        Width="550" Height="350"
         WindowStartupLocation="CenterScreen"
         x:DataType="local:MainWindow" x:CompileBindings="True">
   <Panel>