Decisions, decisions! Marten seal bred with black tort?

[EastNeukRabbits]

I have black tort and black harlequin Rex rabbits, I’ve been offered a marten seal buck but I don’t know what the colour outcomes could potentially be? The torts and Harlequin’s have black self in their background. The m.s. buck is sired by two marten seal parents. Picture of offered buck.