pulled #15 and made some adjustments

HandyControl/Themes/Styles/DataGrid.xaml

@@ -82,14 +82,15 @@
                         <DataGridDetailsPresenter Margin="0,6" Grid.Column="1" Grid.Row="1" SelectiveScrollingGrid.SelectiveScrollingOrientation="{Binding AreRowDetailsFrozen, ConverterParameter={x:Static SelectiveScrollingOrientation.Vertical}, Converter={x:Static DataGrid.RowDetailsScrollingConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}" Visibility="{TemplateBinding DetailsVisibility}"/>
                         <DataGridRowHeader Grid.Row="0" Grid.Column="0" SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical" Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Row}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
                     </SelectiveScrollingGrid>
-                    <ControlTemplate.Triggers>
-                        <Trigger Property="IsSelected" Value="True">
-                            <Setter Property="Background" Value="{DynamicResource PrimaryBrush}"/>
-                        </Trigger>
-                    </ControlTemplate.Triggers>
                 </ControlTemplate>
             </Setter.Value>
         </Setter>
+        <Style.Triggers>
+            <Trigger Property="IsSelected" Value="True">
+                <Setter Property="Background" Value="{DynamicResource PrimaryBrush}"/>
+                <Setter Property="TextElement.Foreground" Value="White"/>
+            </Trigger>
+        </Style.Triggers>
     </Style>
     <Style x:Key="ColumnHeaderGripperStyle" TargetType="Thumb">
         <Setter Property="Width" Value="8"/>