Mood ring eyes.

Well, colour-changing eyes. I'm not sure if this holds true for all people with hazel eyes, but I know that mine tend to change colour a bit. Granted that it isn't mood-controlled, but those sort of things do happen. For example, most of the time my eyes are a brown-ish colour, but they have been green, brown-gold, and my mom swears up and down that they have been purple once. xD

So, colour changing eyes can be justified. Crazy-spectrumed-mood-changing-sparkling-like-the-sun-eyes can not.