[souffle]

It's not possible to tell from the parents colours. Black is recessive so one parent has two black genes (aa) He will have one of these. Chocolate is black with rust so aabb. He will have one black and one rust from that parent (ab)
In theory he should be black and the only gene that will cover up the black is cream. (ee)
If both parents carried cream then it is possible.
The only way he can have red eyes or eye is if he also has cinnamon (pp) also recessive and could be carried by both parents.
Heterochromia is fairly common especially if there is a pattern in the mix.
For him to be mink he would need two cream, two cinnamon and also the dominant umbrous gene so eeppUu or eeppUU.
Black can hide umbrous so possible.
That's a big mish mash of genes which makes breeding very unpredictable.