Which Grasparkiet breeds come in Grijsvleugel?

Club breed standards describe Grijsvleugel for the Grasparkiet.

Grasparkiet pattern

Grijsvleugel

Budgie mutation: gray wing markings instead of black, the body color diluted by about half.

2 Grasparkiet breeds list Grijsvleugel. It is in a club standard for 2 breeds.

Breed	WBO	ABS	COM	BS UK
Grasparkiet	Standaard (“Greywing”)	Standaard (“Greywing”)	Standaard (“All Greywings of the Green series; All Greywings of the Blue series (inc. Yellowfaces)”)	Standaard (“GREYWING”)
GrasparkietGrijsvleugel	Standaard (“Greywing”)	Standaard (“Greywing”)	Standaard (“All Greywings of the Green series; All Greywings of the Blue series (inc. Yellowfaces)”)	Standaard (“GREYWING”)