Help me register my Chihuahua

Hi! I just got a chihuahua long coat. I am trying to AKC register her.. my only problem is i can not figure out what to consider her color, i can email a picture to anyone that thinks they could help m out.. her face is a reddish color, her legs seem like a dark fawn color, and she has black down her spine and her tail and on her forehead.. i am just so confused.. PLease help..

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