Change color of Button when Mouse is over

I want to change the background color of a button when IsMouseOver == True

    <Button Command="{Binding ClickRectangleColorCommand}" Background="{Binding Color, Converter={StaticResource RGBCtoBrushColorsConverter},Mode=TwoWay}" Width="auto" Height="40">
        <TextBlock Foreground="Black" Text="{Binding Color, Converter={StaticResource RGBCColorToTextConveter},Mode=TwoWay}"/>
          <Button.Style>
             <Style TargetType="Button" BasedOn="{StaticResource {x:Type Button}}">
               <Style.Triggers>
                  <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Background" Value="DarkGoldenrod"/>
                  </Trigger>
               </Style.Triggers>
             </Style>
         </Button.Style>
    </Button>

I can't seem to understand why this trigger isn't working.

Try this- In this example Original color is green and mouseover color will be DarkGoldenrod

<Button Content="Button" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="50" Height="50" HorizontalContentAlignment="Left" BorderBrush="{x:Null}" Foreground="{x:Null}" Margin="50,0,0,0">
    <Button.Style>
        <Style TargetType="{x:Type Button}">
            <Setter Property="Background" Value="Green"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border Background="{TemplateBinding Background}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Background" Value="DarkGoldenrod"/>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Button.Style>
</Button>