Короче есть глава "Олений покров". В ней раздел Определения и написано что Общий термин "fawn" покрывает все оттенки когда волос был окрашен только фаомеланином, И ПОСКОЛЬКУ ДИАПОЗОН очень большой, рекомендуестя зоздавать под-классы. Есть добровольное соглашение ограничить их 4мя под классами red fawn (красный олень), dark fawn (тёный олень), orange fawn (оранжевый олень) и pale fawn (бледный олень)
Далее описание этих под-классов (у нас уже ночь, попробуйте провести через автоматический переводчик)
The red fawn coat is of a deep, warm shade, close to that of
mahogany. The coat is solid red, without becoming paler on
the inclined parts of the body. The Irish Red Setter is a particularly
notable example.
The dark fawn is characterised by a dark colour but, even
though it can tend to red, it never achieves the warm shade
of red fawn. It always appears duller, even in short coated dogs.
Lightening can be observed on the inclined parts of the animal,
making these regions appear less pronounced in colour.
The orange fawn class comprises all the intermediary shades
between dark and pale. They are characterised by an overall
golden yellow colour, which explains the very evocative traditional
names used to describe such coats (golden..) encountered,
for example, in Cockers, Brittany Spaniels, Blenheims,
Golden Retrievers, etc..
As in the previous case, the coat can be a lighter colour on the
inclined parts of the body; these can be pale fawn.
The colour observed in a pale fawn coat is light and corresponds
to a yellow without any darker shade whatsoever. It is
characterised by a blonde colour which is commonly called
lemon, wheaten and also yellow. It is observed in Labradors
for example.
The colour of the nose can vary in fawn coats: sometimes it
is fawn (seen as reddish), but it can also be black, brown, blue
or even beige.
Comments
The variations in shade, from red fawn to pale fawn, are
primarily due to polygenic effects.....