Lets talk about beak colors

[Maria Betancourt]

Recently I noticed that my lavender pen is producing some chicks with beaks with no black at all or with a small amount of black. My breeders have black beaks so Im wondering how to fix it. Is it bad? Should I cull every chick that hatches like that.?
Also in the blues and blacks I hatched from shipped eggs I noticed that most have a partial  black beak.  If the breed standard says that the blues should have black beaks what I should do? So any information on how serious is this problem and how to fix it will be really appreciated.

[John W Blehm]

Lavenders should have "Swarthy horn" colored beaks according to my 1988 ABA Standard.  I've always figured "horn" colored beaks would be like a typical cow's horn, with pretty much any grayscale color from white to black.  I don't know that I've ever heard the word "swarthy" used in a sentence and had to look it up.
My ABA Standard defines...

SWARTHY: Very dark shading over horn or yellow in the beak and/or the shanks and toes.

Of course we are not dealing with yellow, so very dark shading over horn is what we want.

HORN: A term used to describing color of the beak, generally considered to be ivory tinged gray of low saturation and low brilliance.

[Maria Betancourt]

This is one of the extreme cases.  in the cases of the chicks with beaks that are all white like this one....is that a cull? Or that color is still allowed?  How I improve color in the beak? Should I breed back to a good black to fix this? Thanks for sharing your knowledge.