I don't think a coloration pattern is a "breed," any more than a "tuxedo" counts as a breed. I looked in my big book of cats, and neither "Juno" not "Tuxedo" is there. That's why people differentiate between a "seal point" Siamese and a "blue point" Siamese, a "seal point" Himalayan and a "blue point" Himalayan.

I also looked on the Cat Fanciers Association website, and didn't see Juno there. Where did you see it as a "breed?"