Color and pattern male

Head and neck: black, some brown on the hackle allowed; front of the neck similar to the breast.

Back, shoulders and wing-bows: black with brass mixing.

Saddle-hackle: black with a blurred brass feather-edge.

Tail: black, some white at the base of the main-sickles is allowed.

Primary-flights: black.

Secondary-flights: black, some blurry brass marking on the outer-web is allowed.

Breast: glossy green-black.

Belly, thighs and fluff: black.

Down: grey.

Serious faults

Clear visible middle-stripes on head and neck. Marking on the primary-flights. Extensive marking on the outer-web of the secondary-flights. 

Faults

Serious faults to a lesser extent. Too yellow or too light ground-color on the back, shoulders and wing-bows. Excessive white in the tail.

Color and pattern female

Head and neck: black, some brown on the hackle allowed; front of the neck similar to the breast.

Back, wing-coverts and saddle: black with a brass shaft and a creamy to blurred brownish feather-edge is permitted.

Tail: black.

Primary-flights: black.

Secondary-flights: black, some blurry brass marking on the outer-web is allowed.

Breast: cream to light brown in the center; towards the outside mixed with some black; shafts are lighter tinted and clear distinguishable.

Belly, thighs and fluff: cream to light-brown with some black mixing.

Down: grey

Serious faults

Clear visible middle-stripes on head and neck. A clear sharp feather-edge on back, saddle and wing-coverts. Extensive marking on the secondary-flights. Marking on the primary-flights. 

Faults

Serious faults to a lesser degree. Complete absence of the brass shaft on back, wing-coverts and saddle.

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