Hi, I've revived the thread but I've been researching often too and will add a few things to help someone out.
The Brownwing mutation is brownish/grey in color. His eyes are plum-eyed, like red, but not red. The male cere is blue, but may mix with the female when young.
The patterns look more like fallow than cinnamon.
Here I leave a picture of a baby boy.😊