Hopefully JaneS will see this and answer. My understanding (may not be correct) is that orange roans can have black or brown pigmentation. Those with black pigmentation will have a black nose and dark brown eyes. Those with brown pigmentation will have a brown nose and lighter brown eyes. Both can be shown.
Does your girl have a pink nose or a light brown one and are her eyes really amber or are they brown? Can you post a photo of her?