Color and pattern male

Head: silver-white.

Neck: hackle silver-white; narrow grey middle-stripes in the lower half of the hackle are permitted but not desired.

Back, shoulders, wing-bows and saddle-hackle: silver-white.

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

Wing:  front black, wing-bar glossy green-black.

Primary-flights: black with a narrow white edge on outer-web.

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

Breast: glossy green-black.

Thighs, belly and fluff: black.

Down: greyish.

Serious faults

Yellow tint in hackles. Excessive middle-stripes. Rust-brown or red on shoulders and wing-bows. Excessive white in breast, thighs and belly. White in tail. 

Faults

Serious faults  to a lesser extent. Incomplete white wing-bay.

Color and pattern female

Head: silver-white.

Neck: hackle silver-white, each feather in the lower half of the hackle with a narrow black middle-stripe, running parallel to the edge, ends in a point near the tip; front of the neck similar to the breast.

Back, shoulders, wing-coverts and saddle: each feather can vary from dull grey to bright silver-grey finely pencilled with darker grey following the feather outline; minimal light-colored shafts permitted but not desirable.

Primary-flights: black with a narrow white edge on outer-web.

Secondary-flights: outer-web similar to the back; inner-web greyish-white.

Tail: main-feathers black with the exception of the upper ones, which like the coverts are light-grey with fine dark-grey peppering.

Breast: robin-red or salmon-red ranging to almost fawn, shading off to ash-grey on the thighs.

Thighs, belly and fluff: ash-grey.

Down: greyish.

Serious faults

Red or rust on wings. Brown sheen on back, wing-coverts and saddle. Light shafts. Yellowish tint in the neck-hackle.

Faults

Serious faults to a lesser extent. Light shafts in the breast.

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

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

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