Board Thread:WARNING - SPOILERS and FALSE INFO AHEAD/@comment-11853952-20130716233701/@comment-11535522-20130725175551

the alpha's eyes being a different toned red is just to distinguish the good and the bad alphas. Their eyes  are slightly different so we can notice the difference between the good and bad. It has nothing to do with how many betas they killed or if they are a true alpha or not.