8 unique data ranges

I have 20 agents at the agency. I need to programatically color counties which they belong to. The problem i have is that MapPoint supports only 8 unique Data Ranges. Is there a way to get around that ? I could use the import territory option however, the colors are limited and they end looking so much alike when there are 20 territories displaying on the screen. So here is a summary of my questions.

Is there a way to work around the "8 unique data" limitation? or
Can i choose what colors i want when using the import territory because the default colors are too similar which makes it impossible to distinguish what county belongs to whom ?

Thanks in advance for any help given

Andre