Color and pattern of the male

Head: orange.

Neck: hackle gradually transitioning from orange to orange-yellow from top to bottom; front of the neck glossy green-black, a light throat-color is permitted.

Back, shoulders and wing-bows: red.

Saddle: hackle light orange; a slightly deeper shade than in the neck-hackle is permitted, but uniformity is desired.

Tail: main-feathers black; sickles and coverts glossy green-black.

Wings: front black; wing-bar glossy green-black.

Primary-flights: black with a narrow brown lace along the outer-web.

Secondary-flights: inner-web black, outer-web orange-brown, forming a orange-brown wing-bay when the wing is closed.

Breast: glossy green-black.

Thighs, belly and fluff: black.

Down: creamy to light-grey.

Serious faults

Absence of the wing-bay. White in tail and wing-flights.

Faults

Slightly too dark hackles.

Color and pattern of the female

Head and neck-hackle: light golden-brown, hackle with negligible shaft-stripes.

Back, breast, front of the neck and wings: creamy yellow wheaten.

Tail: upper main-feathers on both sides deep wheaten, faintly speckled with black; other feathers dull black or black with a narrow wheaten edge.

Wing-flights: outer-web wheaten, inner-web wheaten-grey with brownish-black spots.

Thighs, belly and fluff: light creamy yellow-wheaten.

Down: creamy to light-grey.

Serious faults

Significant uneven upper-color.

Faults

Somewhat uneven or slightly too dark or slightly too light ground-color. Clearl visible shaft-stripes. Light hackle-color.

Feather details from:  http://www.kippenencyclopedie.nl

Website from Johan Albada with more than:

         5000 photos of chicken-breeds, chicken color varieties and feathers.    

Genetic code: https://kippenjungle.nl/Overzicht.htm

Website from Henk Meijers with all available information regarding chicken genetics including the world famous 

Chicken Color Calculator