What is the difference between blue appleyard calls and regular appleyard calls???

[Blue is my chicken]

So I am getting a pair of call ducks and the lady has regular appleyard calls and blue appleyard calls she has sent a picture of the regular appleyard calls but said she does not have a pic of the blue appleyard she said she would get a pic but has not sent one yet
Just wondering the difference between them
Thanks for your help

 

[Tookie]

I don't know much about duck breeds and all, but I just assume its a different color variation of Appleyards and there's not too much of a difference.

 

[Luv Ducks]

So I am getting a pair of call ducks and the lady has regular appleyard calls and blue appleyard calls she has sent a picture of the regular appleyard calls but said she does not have a pic of the blue appleyard she said she would get a pic but has not sent one yet
Just wondering the difference between them
Thanks for your help

I read that the Blue will have light gray blue feathers on their bodies and a dark blue gray neck. Not sure if this is how yours would be, just something I saw online about the subject.

 

[Blue is my chicken]

I read that the Blue will have light gray blue feathers on their bodies and a dark blue gray neck. Not sure if this is how yours would be, just something I saw online about the subject.

Sadly we didn't get these ducks but thanks