The scales say eastern brown to me, however that's got nothing to do with actual pigment. Snake skin is made of beta keratin so it's all different shades of the same colour, but the darkness does comply with the patterns or colour of the snake's skin eg. a red-bellied black has extremely dark brown dorsal scales. Can you show us a closer shot of the spinal row? These are highly distinguisable on things like green trees. But yeah get your hands on a field guide by peter mirtschin or the like, or use the internet, and find the scale count.