Les,
Here is teh proposed standard for the Opal for a comparison, it will breed true 100% of teh time when not crossed with anything unlike a Dun based bird,
Male Description:
Comb, wattles, face, earlobes: Red
Beak: light Horn with slight bluish cast at base
Leg, Shank and Toes: Consistent Medium to light Bluish Slate
Eye: Brown
Head and Hackles: Egg shell white shafting laced in Medium Dun or even colored shade of khaki brown
Back: Medium Dun or even colored shade of khaki brown
Saddle: Eggshell White shafting laced in Medium Dun or even colored shade of khaki brown
Tail: Well spread Eggshell White with no appearance of lacing or shafting in primary or secondary feathers
Tail Coverts: Eggshell White laced in Medium Dun or even colored shade of khaki brown
Wings: Eggshell White with no appearance of lacing or shafting in primary or secondary feathers
Wing Bow: Eggshell white laced in Medium Dun or even colored shade of khaki brown
Breast: Evenly yet finely and lightly laced in a medium to light dun or khaki brown free of shafting.
Female Description:
Comb, wattles, face, earlobes: Red
Beak: light Horn with slight bluish cast at base
Leg, Shank and Toes: Consistent Medium to light Bluish Slate
Eye: Brown
Head and Hackles: Eggshell White lightly laced in light to medium Dun or even colored shade of khaki brown
Back and Cushion: Eggshell White lightly and finely laced with medium to light dun or Khaki brown free of shafting.
Tail: Well Spread, Eggshell white absent of lacing, shafting or other coloration
Tail Coverts: Eggshell White laced in Medium Dun or even colored shade of khaki brown
Wings: Primary and Secondary Eggshell White Absent of Lacing, shafting or other coloration
Breast: Eggshell White Evenly laced in a light to medium dun or khaki brown free of shafting.
Major Defects / Disqualifications
1. Leg color other than medium to light bluish slate.
2. Presence of "ticking" (dark colors) of any feather.
3. Presence of lacing on primary tail or flight feathers
4. Male: Grey coloration to hackle or saddle
5. Positive white coloration of plumage
6. Appearance of bluish cast to plumage
7. Appearance of shafting in male or female plumage
