Henk's calculator, good thinking! Perhaps then the hetero Co birds will show some stippling?

My guess has been that the laced birds that are Pg/Pg, ML/Ml, Co/co birds will have thick black lacing with just a sliver of silver or gold running down the center and that the laced birds that are Pg/Pg, Ml/ml, Co/Co would have just half-moon crescents of black at the end of the feather. In any case, I pair up my buff laced birds per that potentially flawed understanding.

Any thoughts folks?

Dan