Yellow is their wolf coming out, red is them becoming mad. A true alpha, one born into dominate not fought to dominance will be the only one with special eye color. All wolves (beside special wolves called Omegas) are dominate wolves. It is the wolves level of dominance that get them their pack order. No one beside Avina is more dominate then Brice. When it comes to the power of will over another only Avina can make Brice submit. Does that make sense?