I have been reading about the red and black link chickens. It looks like they put a Rhode Island Red or New Hamp Red over a half dozen different types of hens to get the sex link. Has any one ever put a Rhode Island or New Hamp rooster over an Americana hen? I dont care if they are sex link but would like to get an olive, green or blue egg in higher numbers. I wonder if they produce better than the pure americana?