Note

As the chickens with the mottled color varieties age, the amount of white in the pattern will increase. Two-year-old chickens generally have the best pattern distribution.

Color and pattern male and female

The entire plumage should be as evenly lavender as possible, with a sharply defined white mottle. The pattern should be as regular as possible.

The tail steering-feathers and wing-flights, and in the male also the sickles, with a small white mottle. The mottle is located at the tip of the feather symmetrically in relation to the vein. The mottle varies from slightly crescent-shaped to diamond-shaped. Lavender should predominate.

Down: silvery lavender.

Serious faults 

Strong deviation in markings due to the presence of too much white or too much lavender in the plumage.  Strong irregularly distributed pattern.

Faults 

Slight color and pattern deviation. Too much white in the head-plumage. Almost completey white steering-feathers or wing-flights. Slightly irregularly distributed pattern.

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