Brahma question

[Sjisty]

What is the difference between a Blue and a Gold Brahma? Someone sent me a picture of her "Blues" and they look like Gold/Partridge Brahmas to me. Is anyone out there familiar with the rare colors?

 

[loverOFchickens]

Blue barahmas are supposed to be one color I thought???
Kind of a slate.

I have buff and they are slightly darker buff than a orphington with the same pattern as the light.

I could be wrong I have never seen the blue.