Which Undulat breeds come in Opaline?

Club breed standards describe Opaline for the Undulat.

Undulat pattern

Opaline

Budgie and lovebird mutation: body color spreads into the wings and the head barring is reduced, leaving a clear V on the back.

4 Undulat breeds list Opaline. It is in a club standard for 4 breeds.

Breed	WBO	ABS	COM	BS UK
Undulat	Standard (“Opaline; Opaline Cinnamon; Rainbow”)	Standard (“Light Green Opaline; Rainbow”)	Standard (“Opaline; Opaline Cinnamon”)	Standard (“OPALINE - Light, Dark, Olive, Grey Green; OPALINE - Skyblue, Cobalt, Mauve, Violet, Grey”)
UndulatOpalin	Standard (“Opaline”)	Standard (“Light Green Opaline”)	Standard (“Opaline”)	Standard (“OPALINE - Light, Dark, Olive, Grey Green; OPALINE - Skyblue, Cobalt, Mauve, Violet, Grey”)
UndulatOpalin kanel	Standard (“Opaline Cinnamon”)	No ruling	Standard (“Opaline Cinnamon”)	Standard (“OPALINE CINNAMON - Light, Dark, Olive, Grey Green; OPALINE CINNAMON - Skyblue, Cobalt, Mauve, Violet, Grey”)
UndulatRegnbåge	Standard (“Rainbow”)	Standard (“Rainbow”)	No ruling	Standard (“RAINBOW - Opaline Whitewing Yellowface & Goldenface”)