Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-5322646-20131114170553/@comment-11533671-20131115170838

^ I'm not sure I follow you. The examples I gave were not explaining the reasons for the eye color as you say I was doing, they are showing where the eye colors changed due to them either masking it or a continuity F-UP. I will lay it out a little better here but note that I am not talking about the reasons for the coloring (that has long been established):

You say that you are talking about an Alpha making their eyes turn to Blue or Yellow as they were before becoming an Alpha.

S1 - Beta Derek: His eyes are shown to be Yellow, despite the information we are given later in S3 that his eyes SHOULD be Blue. This indicates that he was able to conceal the Blue color from others by making his eyes Yellow.

S2 - Alpha Derek: His eyes are Alpha Red, the Blue eye color doesn't even show up until Jackson's werewolf eyes are revealed. Beta Peter: His eyes are Yellow even though we also learn that his eyes should be Blue. This indicates that he can conceal the Blue coloring just like Derek did in S1 by making his eyes Yellow.

S3 - Alpha Derek on the rooftop: His eyes have only been either Yellow (Beta) or Red (Alpha) up until this scene when they suddenly are shown to be Blue. Why would they be Blue in only that one scene? Beta Peter: His eyes are now Blue and not the Yellow we've seen in S2.

In short, Derek as an Alpha had Red eyes but in that one scene they are suddenly Blue, this indicates that he can control their appearance just as he did in the previous seasons. Whether or not he can make them turn Yellow as an Alpha could be a different thing. He could switch them from Blue and Yellow as a Beta but maybe because he is an Alpha now he can only switch them from Red to Blue.

Either way the Blue eye color is like a mark of sin for them. If you change the color of your eyes to be different than Blue then you are masking their true color. You are hiding the "mark" behind a different color.