I thought it was mostly assumed that Dark Throats were a mutation from an Amherst x Golden cross? That seems to be the standard (but not officially recognized) theory considering all the Amherst similarities.
BobWhite, personally I wouldn't show that bird for anything other than fun. And considering how much work will need to go into mellowing down any gamebird, I just don't see showing him as fun.
This is because you very, very rarely win an award with a backyard bird that has not been bred for show - or at least been bred true to type. Very rarely do show animals crop up out of non-show stock (and even more rarely do show animals crop up that can be competitive). This is true for dogs, rabbits, sheep, and gamebirds.
He will probably turn out to be a beautiful bird that turns heads, but "pretty" does not mean "show quality."
By all means, if you want to show him then work with him daily. Get him used to having his wings pulled out, his toe nails looked at, and being turned in all angles while in someone's hand. But it is very easy to think that "your" bird is the best bird, and while most judges are very considerate and will let you down gentlely if he isn't show stock, others rush through things and rattle off why your bird should never even see another female, let alone ever reproduce.
As long as you take comments about him with a grain of salt and you're just doing it for fun to see if he meets breed standards then have at. But if you genuinely want to win a prize then you'll need to talk to people who seriously breed show animals and acquire a few birds from them.
I say this as someone who has been to rabbit shows with animals that, to put it politely, should never be parents. It took time for me to figure out that an animal's conformation, size, and color doesn't improve based on how much you adore them
