Yes, the Exotic Shorthair can have a tortoiseshell coat.
Yes, a purebred American Shorthair can have a tortoiseshell coat.
Yes, a purebred Exotic Shorthair can have a calico coat.
Yes, The exotic short hair can have a shaded silver coat.
Yes, a purebred exotic short hair can have a blue and white coat.
Yes, the purebred British Shorthair can have a black smoke coat.
Yes, the purebred American Curl can have a tortoiseshell coat.
Yes, the purebred Brumese cat can have a tortoiseshell coat.
Yes, a purebred Burmilla can have a tortoiseshell coat.
Yes, a purebred British Shorthair can have a tabby coat.
Yes, a purebred American Shorthair can have a chocolate coat.
Red is a possible color for the British Shorthair breed of cats but it is not a common color.
A purebred British shorthair can have a white coat, but it will be mixed with other colors.