Not sure if this is helpful, but the Kaifeng SMM features prominently in the novel Binding Force... at a time, however, when there is no Sarna March anymore and the Kaifeng SMM has become the military of of the Sarna Supremacy while curiously retaining its FedCom name and CO.
Anyways, I don't recall a paint scheme being mentioned but it may very well be that there are bits and pieces of information scattered throughout the novel.
