
 Originally Posted by 
macropod
					 
				 
				Yes, and the instructions in post 6 show how to do that.
			
		 
	 
 
If I am understanding correctly, those instructions don't change the background color for the entire cell, just the text background of the specified field, so that if there are other merge fields or text in the cell, it will only highlight the specified field and not the whole table cell.
I was able to conditionally shade the entire cell by running this VBA macro after the mail merge.
	Sub color()
Dim r As Range, text As String, backgroundColor As WdColorIndex
    Set r = ActiveDocument.Range
    text = "TOXIN"
    backgroundColor = wdGray25
    With r.Find
       Do While .Execute(FindText:=text, MatchWholeWord:=True, Forward:=True) = True
    r.Cells(1).Shading.BackgroundPatternColorIndex = backgroundColor
       Loop
    End With
End Sub