Though scientifically there are only 3 head colors:red, yellow, black
3 breast colors: purple, lilac, white (blue is still out there???)
6 back colors: green, sf and df pastel green, blue, sf and df pastel blue
But in breeders, pet owners terms there are many names....usually given by what they see. It is helpful in describing a birds looks when they cannot see it or if the oicture can not be provided.
I think that descriptive terms will always be used. Even though the serious breeders are pushing for unity in the terms. I have found that most knowledgable breeders do know what someone is talking about when they use the descriptive term..For example when people note they have an OH PB dilute.... I know they have a scientific...yellow headed, purple breasted, single factor green pastel which is a male. (only males can be dilutes/sex linked)
They say RH WB YB (red head, white breast, yellow back) I know they have a red headed, white breasted, single or double factor green pastel. I would need to know what the bib color was to find out if they have a sf or df... in the single it will be bluish, in the double it will be whitish/grey...
Many call heads Orange because that is what they see....not yellow.
Tangerine Head to describe a red head that has a good bit of orange in it.
Charcoal head on a dilute(sf pastel green) because the black pigment has been changed due to the single factor of yellow (pastel)
Rose Breat to describe a very light lilac breast
Powder blue to describe a blue pastel that has a single factor of pastel (yellow) and the body retain the blue color as opposed to the grey color (silver)
Usually the lighter the breast the lighter the back color.
There are many other terms used to describe color
Melanistic (black)
Blue head
Cinnamon
Dark Factor Lutino
Australian Yellow
Albino
Seagreen
Pied
Redline
Noble Blue
Dark Blue
Clear Wing
Pied
and more.... Here is a site that contains pictures of some of the rarer mutations
http://users.skynet.be/fa398872/navfram.en.htm
Hope this helps and I hope people will use the terms they are comfortable with.... learning the genetics is not everyone's interest. And if you are like me... I am interested in learning but it don't come easy for me
