Are tortoiseshell cats friendly

I have a tortoiseshell cat, and she is fairly friendly... well, she doesn't scratch me or bite me unless she is really freaked out, although she also tends not to like my younger sibling and her friends, but they're all really loud. I, however, can't speak for everyone, I'm sure there are some tortoiseshell cats that aren't friendly at all. 'Tortoiseshell' is just the color of their fur, I think there can be friendly and not so friendly tortoiseshell cats, but I know mine isn't mean.