The color is sequential. Mine started with light blue, then went to light
green, and so on. The first user/author gets the first color. Second
"commentator" gets the next color and so on. If you are pink, then change
your initials to something else and you'll get a new color. Excerpt:

"Comments in documents

On the Tools menu, click Options, and then click the User Information tab.
In the Initials box, type the initials or name that you want to use in your
own comments.
Notes

The information you type in the User Information dialog box is used by all
Microsoft Office programs. Therefore, any changes you make to these settings
will affect other Office programs..."

"Belinda" wrote:

Is there a way to change the colors of comment bubbles? In Word 2000, the
highlights are yellow. In Word 2004 for Mac they're blue. But in Word 2003,
they show up as pink. And I loathe pink.