The champagne gene combined
with the true roan gene can be difficult to identify. When the white
hairs that are found in roans are mixed with champagne-colored
hairs, they are very hard to see. This might have to do the hollow
hair shafts unique to the champagne color. From even a short
distance the white hairs make the coat look uniform. A roan
champagne may look like a lighter version of non-roan champagne.
They must be seen very closely and it might even help to lift the
mane to see the non sun faded coat.