Afghan genetics are so incredibly complicated. Theres thousands of color combinations/effects/masking agents, coupled with the fact that really, you dont have any idea what color your dog is until it is a mature adult about 6 or 7.
About the only thing that is 100% agreed on is if you breed brindle to brindle, you get 100% brindle, and self masked to self masked create double masked.
We are expecting out of this litter 50% brindle, 50% solid, with black, red, creme, blue, and black and tan as options, and a good 25% masked, unless there's a chinchilla effect hidden on holly's side since she has domino and grissle on both her maternal grandmother and great grandfather and paternal grandmother. I'd love to see a blue domino, but the chances are pretty slim
I'm not very good at the genetics part, although I am trying to read up more. We always say, color is the last thing on your mind when you breed, but its oh so fun to try to predict
here's a great afghan website for color genetics:
http://www.farbgenetik.afghanen.de/Farben/ei_start.html