Jade will always be genotypically (genetically) Spalding. It would take many generations of breeding for phenotype (visually) to become a jade bird that looks like an Indian blue - aside from colour. But, that being said, apparently there are no pure blues in North America anymore anyways, so why do we distinguish between blue and Spalding any more? It's because spaldings are available in many different degrees of blue to green ratio of genetic material. Sometimes I wonder if the hybridizing was worth it, but it was never in my hands to decide, the damage has been done, all we can do now is sort between the mud and the chocolate milk!
As for white, pattern, pattern, pattern! White is an ingredient for pied, also a pattern, therefore, it makes sense. No single copy of a colour mutation currently can be combined with another mutation to provide a new pattern.
