How to set DataGrid.RowDetailsTemplate background to match DataGridRow cells

[cornerbowlsoftware]

I would like my RowDetailsTemplate background and foreground colors to match that of the cells found above the RowDetails when de-selected, selected and hovered over. By default, I see my row details background is light gray instead of the same color as the cells above. Does anyone know how this can be styled for all triggers? Here's what I have so far:

			<DataGrid.RowDetailsTemplate>
				<DataTemplate x:DataType="lib:IPreviewMessageViewModel">
					<Grid 
						ColumnDefinitions="*"
						Background="Transparent"					
						IsVisible="{Binding DisplayPreviewMessage}">

						<TextBlock
							Classes="rowDetails"
							Text="{Binding PreviewMessage}" />
					</Grid>
				</DataTemplate>
			</DataGrid.RowDetailsTemplate>