Hi Wayne, I believe there are British Blues also. I believe that's what Efrat's 3 are, although two of them are white.
let me explain...Blue as some already said here is a colour of gray in any cats. There are brotish blue, Russian Blue Blue persains and more.... all Korat and chartrax are blue...


3 of my babies are british short hair but only Tsoomi is Blue, Milki and Kfitzi are Colour-point british shorthair, same breed, different colours...