Note

As the chickens of the millefleur 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

Head: isabel.

Neck: hackle isabel; each feather ends with a diamond-shaped pure white spangle and a isabel yellow ornamental fringe on the sides; front of the neck similar to the breast.       

Back and shoulders: isabel, each feather with a diamond-shaped white spangle. 

Saddle-hackle: similar to the neck-hackle, the shaft-stripe as well as the mottle are less noticeable because the feathers ends thinner than those of the neck-hackle.

Tail: white

Wings: bow almost white; wing-arch isabel, sparsely with tiny white mottles; greater-coverts isabel, each feather ending in a large, almost round, white spangle, forming a clear white wing-bar when the wing is closed.

Primary-flights: inner-vane white, outer-vane white with a narrow isabel lace and a white mottle at the tip.

Secondary-flights: outer-vane isabel, inner-vane white widening at the end to the-outer vane.

Breast: isabel, each feather with a white spangle.

Belly, thighs, leg- and foot-feathering: approximately similar to the breast. 

Down: yellowish to white.

Serious faults

Too light or uneven ground-color. Lavender on the neck-hackle. Coarse and irregular white spangles. Vague blurry pattern.  Too much white on the breast and too few spangles on the hackles. Complete lavender tail or wing-flights. 

Faults

Uneven ground-color. Some lavender on the neck, wing-flights or tail.  Slightly coarse or somewhat irregular spangles. Lavender splashes on white.

Color and pattern female

Head and neck: isabel, each feather ends with a white spangle; front of the neck similar to the breast.       

Back, shoulders, breast, bow, wing-coverts and saddle-cushion: isabel, each feather ends with a white spangle.

Tail: steering- feathers white,  coverts similar to the breast; the upper-covert on each side is covered by a strongly elongated covert, which is, except for the slightly longer white spangle, similar to the other coverts.

Primary-flights: inner-vane white, outer-vane slightly isabel laced, lower end white laced. 

Secondary-flights: outer-vane isabel, inner-vane white widening at the end, to the-outer vane, connecting to the white end.

Belly, thighs, rear-end, leg- and foot-feathering : approximately similar to the breast. 

Down: yellowish to white.

Serious faults

Too light or uneven ground-color. Lavender on the neck-hackle. Coarse and irregular white spangles. Vague blurry pattern. Too much white on the breast and too few spangles. Complete lavender tail or wing-flights. 

Faults 

Uneven ground-color. Some lavender on the neck, tail or wing-flightsl.Slightly coarse or somewhat irregular spangles. Lavender splashes on white. 

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