If I have Track Changes on and the ‘Track Formatting’ option selected when I add the yellow highlight, I get a formatting change balloon telling me that I’ve added highlight formatting equally, if I have ‘Track Formatting’ selected when I remove the highlight, I get another formatting balloon re highlighting. I just tested what I think you were dong in Word 2010, and I don’t get the same issues. (Thanks to Tony Jollans on the Microsoft Office Word Discussion Group who alerted me to this solution: )
It’s fine when you only have the occasional highlighting to do, but what if you’re doing a lot of adding/removing highlighting from text? You need a quicker way, right? Word 2003 Microsoft Word has a toolbar icon for applying and removing color highlighting, just like using a real highlighter.