My beautiful lilac oriental 'Willow' gave birth to four beautiful kittens 5 days ago. I thought the father was my siamese cream point 'Mango' (pictured above). However the kittens are so dark. Two of them are black and two chocolate. willow's mother was an oriental tortoiseshell, so I know there is that dark colour in her genes. I was just very surprised that the white of my Mango did not come out in the kittens. So do you think that maybe Willow actually bred with another cat?