I think it should be important to know the difference between actual chocolate and dun. If you have a Serama it could be either chocolate or dun but it's hard enough to breed for a color with everyone using the wrong terminology. That said, I understand how hard it can be to look at a Serama and be able to say, hey that is chocolate or hey that's dun. I see a lot of them that just look nothing like what I expect chocolate to look like "BUT" it doesn't matter if it breeds like chocolate then the appearance may be because of other genes modifying the way it looks.
Those breeding the dun Serama's, cannot get the same results as breeding for chocolate. They are not chocolate and, in my opinion, should not be called chocolate. It shouldn't be that hard to discover the difference once they're bred but, again, Serama's will be Serama's.
Plus, there may be breeders out there trying to cross 2 "chocolates" but one is chocolate and one is dun so WOW, what do you do? Except enjoy the crazy colors. I prefer the crazy colors but I've set a goal to work on some real chocolates, solid ones that are good enough to show and to breed and set the color and type so others who want them can use their good black Serama's to make more. Got a lot of work ahead but I'm hoping to find a few others with the same goal to make it go a little easier, and more fun. Along the way, I expect to have a lot of extra's that don't make the cut but still carry or show the gene and they will be for sale.
Here is an outline of the way Chocolate breeds
The Chocolate gene is sex linked and Dun is not.
Chocolate cockerel + Chocolate hen = 100% Chocolate
****the finish line****
Chocolate cockerel + Black hen = all Chocolate hens & all Chocolate Split cockerels (Black in colour but carry the Chocolate gene)
Black cockerel + Chocolate hen = all Chocolate Split males & all Black hens
****This is where I am now*****
Chocolate Split Cockerel + Chocolate hen = 25% Chocolate hens, 25% Black hens, 25% Chocolate cockerels & 25% Chocolate split cockerels
***My second generation******
Chocolate Split Cockerel + Black hen = 25% Chocolate hens, 25% Black hens, 25% Black cockerels & 25% Chocolate split cockerels
***I can take one of my split cockerels back to the black hen Bugsy *****
Chocolate Split which only appears in the Cockerels, they are Black in colour but carry the Chocolate gene