My eyes change color when I'm angry?!

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Eye color does not actually change with mood. What does change is the way light reflects off the iris, creating the impression that the color of the eye has changed. To understand this phenomena, look at the factors that contribute to eye color and affect the quality of light reflected.

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Profession: ER DR

i know this might not be the legitimate answer your looking for and i DOUBT theres an actual explanation for it but i go thru the same

when im in a darker mood (sad,bored,angry, etc) my eyes are a very very dark brown color, almost black

but when im happier and mellow and cheerful, they turn into a much lighter color.
its noticable by many and thats how i know its not the lighting, or the color of shirt i have also

it is the melanin. as your blood pressure rises, the pigments will increase as well.
perhaps you will find the same result after a long hard run.

Barbra streisland syndrome