I'm having issues trying to get a unit I'm making to have just one color for it's tunics out of the 3 rgb colors.

I've given the unit unique colors in the unit_variants_colours. They are Primary: Red, Secondary: Black, Tertiary: Off-White

Ideally what I would have is the tunics to all be white and while the cloaks are red and black. My issue is with how to do this, from what I understand I need to edit the color masks in the variantmeshdefinition but no matter what combination I do so far I haven't been able to get just 1 color. I've gotten it to where only a tiny percent have another color but that's as far as I've gotten.

Does anyone with a better understanding of how the color schemes work have any advice?