[Geek44]

Not sure about the specific vehicles you mentioned but I assume they were the same colours as most later German vehicles. I'm not sure what your existing knowledge is, but basically, these vehicles had a 'dunkelgelb' (dark yellow) base coat with red-brown and green camouflage applied in all manner of various patterns and even tones. Sometimes the vehicles were only dark yellow and green or dark yellow and red-brown...or all three. Colours were applied with a spray gun or a brush or even rags. The colours themselves existed as solid blocks of pigment and could be made into paint by adding either water or fuel. This gave different tones so you have plenty of scope to still remain accurate. Some finishes were apllied in the factory and some in the field. Factory finishes tended toward uniformity but field applied schemes could be anything...literally anything.
From the modeller's perspective, there are several manufacturers that make accurate paint colours straight from the jar. Tamiya is a good example as it's available almost everywhere and their colours are fairly good. I'm sure if you visit you local hobby shop and ask this question, they can steer you towards something reasonable. Hope this helps mate and welcome.
Peace.