Auburns are a bronze based chocolate, and mottled chocolates are kind of like a black based chocolate palm with a recessive black-winged base gene. So if you cross these, half the birds will have a black-based and a bronze based gene, and half will have a bronze-based and a black-wing bronze base. They will all carry chocolate genes, but the will also all carry single recessive genes for gray (palm) and Narragansett. The bronze-based/black-wing bronze based birds will look like Auburns, but carrying all the recessives genes. They won't show up until you cross them with a mate that can pair up the recssive genes. The Black-based/bronze based birds will look like chocolates, but again carry recessive gray and narragansett genes. So you read your calculator right, if you realize that the calculator tells you what they will look like (phenotype) rather than what genes they are carrying (genotype).
If you keep crossing these birds, you will be able to ge seveal different color patterns, but they will always display chocolate, such as chocolate, mottled chocolate, auburn, chocolate palm, silver auburn (chocolate Narragansett), etc.
However, I believe your original question was what color are the mixed birds in the photos. Alas, I don't recognize it. Do the primaries have bars or are they all black. What did the poults look like. Are they grey or slightly brown?
