I have not any special interest for this period (also i'm not historian at all) and don't know much about, but... Word "Netyag" used as a name of poor cossak. It's mean something like "lazybones" and "work-shy" (old russian). It's a correct name for this type of cossacks according to some sources. About sweden, they had colors of regiment, pictures of some troops:Dangerdude said:
Csatádi said: