These appear to be locally made uniforms, and probably very rare ones at that. They are, without a doubt, not NZ or Dutch items since neither country made anything like this in terms of the tailoring. And as Gilles pointed out, the coveralls are quite distinctive and not like anything else I've seen.
I've also found what the pants camouflage is. It is a variant of serb DPM. I've compare the pattern of a DPM I knew serb to this one, and it's the same. The pants isn't faded (I've check on areas not exposed).