How do I make a listbox item color change dynamically

See more:

C#

XAML

WPF

Hi,
I am learning WPF atm, I would like to make a listbox have it's list items color be set by mouse actions. I have number of labels that have a color. On the mouse down event I want to capture the color of the label, and on the mouse up of the Listbox item change the background color. I am using .NET 4.5 WPF in VS 2015. How would I go about this please?

What I have tried:

                <Style TargetType="{x:Type ListBoxItem}">
                    <Setter Property="Background" Value="Silver"/>
                    <Style.Triggers>
                        <Trigger Property="IsSelected" Value="True">
                            <Setter Property="Background" Value="Red"/>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </ListBox.Resources>
            <!--</ListBox.Resources>-->
        </ListBox>

        <Button x:Name="button" Content="Button" HorizontalAlignment="Left" Height="29" Margin="55,475,0,0" VerticalAlignment="Top" Width="214" Click="button_Click" Grid.ColumnSpan="2"/>
        <StackPanel HorizontalAlignment="Left" Height="362" Margin="169,76,0,0" VerticalAlignment="Top" Width="79" Grid.Column="1">
            <Label x:Name="label1" MouseDown="label1_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Red"/>
            <Label x:Name="label2" MouseDown="label2_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Green"/>
            <Label x:Name="label3" MouseDown="label3_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Yellow"/>
            <Label x:Name="label4" MouseDown="label4_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Blue"/>
            <Label x:Name="label5" MouseDown="label5_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Magenta"/>
            <Label x:Name="label6" MouseDown="label6_MouseDown" Content="" HorizontalAlignment="Left" Height="51" Width="79" Background="Cyan"/>
            <Label x:Name="label7" DragOver="label7_DragLeave" DragLeave="label7_DragLeave"  Content="Random" HorizontalAlignment="Left" Height="51" Width="79" Background="White" FontSize="18" BorderThickness="1,0,1,1" BorderBrush="Black"/>
        </StackPanel>

    </Grid>
</Window>