For example:
Code:
Sub Demo()
Application.ScreenUpdating = False
Dim oCell
For Each oCell In Selection.Tables(1).Range.Cells
With oCell.Range
If Len(.Text) > 2 Then
If Len(.Text) < 7 Then .HighlightColorIndex = wdYellow
End If
End With
Next
Application.ScreenUpdating = True
End Sub