For the 6 miniatures I used some combination of the following colors for the paints and shirts. Trying to make then distinct. For the hats I just picked one of the colors also.
"Khaky" (I tried to mix my own khaky color, it didn't work it end up a bit to green, but here is the receipt): (  Orange Fire  3:1   Magic Blue ) :1   Dead White  
Blue using   Magic Blue  
Brown using   Flat Earth  
Grey using   Cold Grey