First column is from my Splash Marans hen bred egg and the results of her being bred to my Barnevelder rooster. F1 is 1st generation. F2 is the egg results from the daughters of that line bred back to my Barnevelder (B) rooster.
Second column is my Isbar-Marans hen (hatched from breeder eggs) egg, then the results of her daughters which are half Isbar-Marans and Barnevelder. You can see the different color tones as the brown genes were reflected. One particular egg is a light blue on the inside which allows the darker Barnevelder coloring to show almost a gold olive...very pretty in person.
Last column is my first experiments trying to see what kind of genes my Barnevelder rooster had. I placed him over a Red Sex Link (actually a Gold Sex Link by store name) and produce a daughter who lays a very nice color.
Then I placed him over a California Grey hen who lays pure white. I got a very pretty peach which indicated he has nice gene color.
Last I put him over my Rhodebar hen who laid a cream color, but which I suspected had a brown inhibitor as this particular line still had fresh Rhode Island Red blood in it to boost productivity, yet were laying light cream. It proved true that their daughters lay a cream.