Um, anyone who's a stickler for terms will immediately announce that those are Easter Eggers, because they are not in separate, distinct colors.
"we have crossed the colours in every generation to produce the best layers of large blue eggs. About half of our hens are the classic red/gold/black that you get when you cross colours, while the others are many colours: blue, wheaten, splash, etc. and the chicks are a delightful rainbow of light, medium and dark colours. "
But that does give another useful thing for sexing:
Look up "black breasted red" and "silver duckwing" chicken colors. You see the black breasts on the males? You do not want chicks that look like that.
