problem with Lowlanders units - graphics query

[phoenix]

I love the Lowlander Unit counters for Vietnam (and other titles), but the company markings don't show on them in game. I'm wondering if there's some way I can fix this, and if anybody would be able to explain to me how the company markings work so that I can figure out what I need to change? Do the company colourings come from a file other than the Units files in the Maps folder? Thanks.