The rooster is pure barred rock, but the hens are all red sex link from the local feed store last spring. So I guess this is what you get when you cross RSL hens and BR roo. Kind of funny that they are all the same cross, but some come out black and others yellow.
You are in for some nice laying hens. That's great. I would think that the black would be the dominate color. How fun, they will barr later. Will be fun to watch it happen.