Eye Color Changing with mood?

I was getting very curious about something I noticed recently. I have very dark brown eyes, and a few friends recently commenting them being black. I didn't really notice this at first. People mistake them for black all the time. But then one day my friend Brooke freaked out when she said my eyes changed from brown to black. At the time I was angry with her. Did the supposed eye color change have anything to do with my mood change?Eye Color Changing with mood?
Eyes can change color, but this takes years to happen, ie. babies eyes usually start out blue, but often darken in time.





When people's eyes appear to change with mood, this is because they hold themselves differently. When a person is sad or brooding or mad, they tend to tilt their chin down. This causes their eyes to look darker. When they're happy or excited, they tend to look up, causing their eyes to look lighter. Then, of course, people who want to think their eyes operate as mood rings tend to have enough imagination to make it so.Eye Color Changing with mood?
Many people claim their eyes change color throughout the day with their emotions. It may be due to lighting or other's perception. There is no evidence that the color itself actually changes.





The iris is what causes the pupil to dilate and constrict (get bigger and smaller), using tiny muscles. So, when the iris changes shape, it may also appear to change color, much in the same way that a balloon seems to get lighter when you inflate it. The iris is more complex than the pure color of a balloon though, as different parts of the iris contain melanocyte variations. The difference in color isn't very perceptible in uniformly colored eyes like gray ones, but is more noticeable in people with hazel eyes, as they have more of a variation in color. Emotion does have an affect on pupil dilation/constriction, as does exposure to light, seeing an item of interest, alcohol, etc. It's a function of the brainstem. There are receptors in the iris associated with the autonomic nervous system, and that causes pupils to dilate when someone is angry, exited, afraid, or in a heightened autonomic state.





Blood flow may also play some role in perceived eye color change. Much like when increased blood flow due to capillary dilation to the face will make a person's skin appear redder (especially in light-skinned people), the same thing may be happening to your eyes and irises.
My eyes have several colors that change with my moods.They are blue when I am mellow green when mad brown when I am sick, yes they can change colors with moods.