In the most predictable situation, the kittens will be about half black and half tabby, with half of them having white on them. The parents could have hidden genes though that would give out some surprises.
They can be either colour as the mother and father cat will have mixed genes!,but you may get a tortoishell too! plus one that takes after mum and one take after dad.
You would probably get some black cats, some white cats, and some black and white cats. And there's also a chance of some grey cats too.
you will get a white or black cat or a mixed i have a...