With that cross all the females should show chocolate, while none of the males will.
Ths is what the genetics calcultor says...
Genotypes:
ERe+ Coco+ Dbdb+ Pgpg+ Mlml+ Cha+Cha+ mh+mh+ di+di+ Ig+Ig+ cb+cb+ i+i+ bl+bl+ Lav+Lav+ C+C+ Mo+Mo+ b+- s+- choc-
Gender = Female, Ratio = 1/2 = 50%, minimum of animals to breed: 2
chocolate patterned gold incomplete doublelaced/halfspangled?
ERe+ Coco+ Dbdb+ Pgpg+ Mlml+ Cha+Cha+ mh+mh+ di+di+ Ig+Ig+ cb+cb+ i+i+ bl+bl+ Lav+Lav+ C+C+ Mo+Mo+ b+b+ s+s+ Choc+choc
Gender = Male, Ratio = 1/2 = 50%, minimum of animals to breed: 2
black patterned gold incomplete laced/halfspangled? Split: chocolate
Phenotypes:
Pullets: chocolate patterned gold incomplete doublelaced/halfspangled?
Cockerels: black patterned gold incomplete laced/halfspangled?
I would go with what Jaykay says... you're not supposed to be able to tell from feathering unless you cross a fast feathered to a slow feathered. But I've found that in most cases females are quicker to feather than males.