How to change the text color for an unchecked row in xaml

I would like to gray out the text associated to an unchecked row in my application using xaml. I tried the following, but it is getting overwritten:

               <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <CheckBox Name="cbkSelect" 
                           IsChecked="{Binding Path=IsSelectedForOrder, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
                            <CheckBox.Style>
                                <Style TargetType="{x:Type CheckBox}">
                                    <Setter Property="Visibility" Value="Hidden"/>
                                    <Style.Triggers>
                                        <Trigger Property="IsChecked" Value="False">
                                            <Setter Property="Foreground" Value="Gray"/>
                                        </Trigger>
                                        <DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True">
                                            <Setter Property="Visibility" Value="Visible"/>
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </CheckBox.Style>
                        </CheckBox>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>