GeekDesk/Control/Other/MyColorPickerDialog.xaml

<Border x:Class="GeekDesk.Control.Other.MyColorPickerDialog"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:hc="https://handyorg.github.io/handycontrol"
        CornerRadius="4"
        >

    <Grid>
        <StackPanel>
            <Grid Width="750"
                  Height="550"
                  Panel.ZIndex="0"
                  MouseDown="DragMove"
                    >
                <Grid.Background>
                    <SolidColorBrush Color="Black" Opacity="0.01"/>
                </Grid.Background>
            </Grid>
            <hc:ColorPicker x:Name="MyColorPicker" 
                            Panel.ZIndex="99"
                            Margin="0,-500,0,0"
                    Confirmed="MyColorPicker_Confirmed"
                    Canceled="MyColorPicker_Canceled"
                    ToggleButton.Checked="MyColorPicker_Checked"
                    SelectedColorChanged="MyColorPicker_SelectedColorChanged"/>
        </StackPanel>
    </Grid>


</Border>