Color and pattern male

Head: lemon-yellow.

Neck: each hackle-feather with a medium-wide bright-blue shaft-stripe, surrounded by a narrow lemon-yellow lace running around the -tip; front of the neck lemon-yellow.

Back and shoulders: lemon-yellow, below the neck-hackle lemon-yellow and blue.

Saddle-hackle: lemon-yellow or lemon-yellow with black shaft-stripes, similar to the neck-hackle, extending from the tip of the feather no more than halfway down.

Tail: steering-feathers bright-blue; support-feathers bright-blue with lemon-yellow lacing; sickles and coverts bright-blue; smaller-coverts with narrow lemon-yellow lacing.

Wings: lemon-yellow , may be partly bright-blue; wing-arch and wing-bar lemon-yellow .

Primary-flights: black lemon-yellow lace on the outside of the outer-vane.

Secondary-flights: inner-vane bright-blue with lemon-yellow lace that runs around the feather tip; outer-vane lemon-yellow  so that when the wing is closed it is complete lemon-yellow.

Breast, flanks, thighs, belly and rear-part: lemon-yellow.

Down: light lemon-yellow or light blue-gray, preferably the latter.

Serious faults

Insufficient or broken shaft-stripes in the neck-hackle. Strong presence of bright-blue in the parts that should be lemon-yellow. A very irregular lemon-yellow ground-color and/or it's heading towards buff or becoming too pale.

Faults

Serious faults to a lesser degree. Insufficient pattern in tail-coverts and wing-flights. A slightly uneven, too light or too dark lemon-yellow ground-color. Presence of entire or partial black feather areas within blue. Blue color that is far too dark or far too light.

Color and pattern female

Head: lemon-yellow.

Neck: each hackle-feather with a medium-wide bright-blue shaft-stripe, surrounded by a narrow lemon-yellow lace running around the tip; front of the neck lemon-yellow.

Back and shoulders: lemon-yellow, below the neck-hackle lemon-yellow and blue.

Tail: steering-feathers bright-blue, except for the top two feathers, which are faintly lemon-yellow laced; coverts bright-blue with narrow lemon-yellow lace.

Wings: bow and coverts lemon-yellow.

Primary-flights: bright-blue with lemon-yellow lace on the outside of the outer-vane.

Secondary-flights: inner-vane bright-blue with lemon-yellow lace running around the tip; outer-vane lemon-yellow so that when the wing is closed it is complete lemon-yellow .

Breast, flanks, thighs, belly and rear-part: lemon-yellow.

Down: light lemon-yellow or light blue-gray, preferably the latter.

Serious faults

Insufficient or broken shaft-stripes in the neck-hackle. Strong presence of bright-blue in the areas that should be lemon-yellow.  Deviations in color-depth in different feather-groups. A very irregular lemon-yellow ground-color and/or it's heading towards buff or becoming too pale.

Faults

Serious faults to a lesser degree. Insufficient pattern in tail-coverts and wing-flights. A slightly uneven, too light or too dark lemon-yellow ground-color. Presence of entire or partial black feather areas within blue. Blue color that is far too dark or far too light.

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