at the shelter I worked at in new york, that's called muted Tortoiseshell! You see she has a little orange in her fur just like a tortoisehell! But i am not sure whether muted tortie applies only to tortoishells who are grey instead of black or if it's also for those that are tabby torties.
Tortoiseshell is for cats that are black and orange or grey and orange, and the markings are more like slashes or stripes of orange within the black rather than spots. White, black and orange spots is called calico, calico can also be grey, white and orange.
Shannonmarie, the boy cat you saw also had little bits of orange? if so that's EXTREMELY rare! all tortoiseshell are usually females!