[Jack Garcia]

Do you mean a/a b/b d/d? It's standardised in the US, although they're not shown often.

I have heard, but have no first-hand proof, that many lines of English show champagnes are actually PE lilacs (what some clubs call lavender), a/a b/b d/d p/p...

 

[Jack Garcia]

That mouse looks very similar to some lilacs I've seen in the US. When you have both dilutions in there, it is very possible for the shade to vary a lot.

The Cooke book is awesome.