I'm not quite sure I understand your question, but the genes for lacing are inherited separately from the blue genes. So if these were my birds I'd cross them to the ones with the best lacing. You can get the blue colour back more easily than you can get quality lacing, from a genetics perspective.
OOOOhhhhhhhhh they are all lovely! I am very jealous. I got ten hatchery Cornish this year- they are truly dismal, like dark cornish coloured leghorns really. The only plus is that they lay lots of small eggs, perfect for pickling. But they are lousy Cornish. Sigh.
Interesting that the green legs will turn yellow. I had a very interesting unexpected chick from my Buckeye/Cornish cross, he was either recessive everything or a sport- he had bright green legs, weird colour and a very strange lean body type. I could explain the green legs but not the body...
Ouch, only one.......... hopefully your chick grows up to be a nice one. I had ZERO result from two dozen shipped Buckeye eggs this spring so I know how that goes!
Good luck with hatches and chicks! My oh-so-reliably - dark cornish broody hen was sitting on 15 eggs under some bushes- found her last night. So she's back in the dog pen of broody shame, really unhappy- the eggs weren't fertile so she would have been out of luck anyway.
How many of these cross chicks did you hatch? I crossed a Buckeye to Cornish, most turned out exactly as expected, very nice, midway in body type between the two breeds but much faster growing. But one cockerel was a weird throwback or something- very tall, very long legs, emu- like, you'd...
Perhaps those two breeds just don't nick together. Have a look at the cornish/australorp crosses turned into a breed here, the Welsh Black: Intended to be more of a dual purpose fowl, but it's still a great read:
http://castlefarmeggs.co.uk/?page_id=787
It's worth a few trials, to see what...
@lpatelski how is Bam Bam' s fertility holding up? Do you have a Bam Bam Jr. selected to carry on with the dark cornish, or will you introduce a new cock bird?