eye color - changing with mood

[longo agora]

In <3idu1e$arm at newsbf02.news.aol.com> tmlawyer at aol.com (Tmlawyer) 
writes: 

>
>I have a hypothesis.
>
>First, I do not believe that the iris changes.  I know that it is
>sufficiently invariant that it can be used for biometric identification 
to
>the extent of 1x10**34 or better.  There are patents on this and a new
>company in NJ exploiting this fact.
>
>By the same token, I believe the persons who claim to see changes.
>
>Perhaps the perceived difference is the iris against a changing
>background, e.g. the lids and adjacent skin surfaces.  A person is said 
to
>be "blue" for a reason; the blood pressure is lower .... often
>dramatically ... when depressed.  Conversely, the b.p. is very high and
>the skin is flushed when aroused.  This would be most pronounced in
>Caucasians and would be apparent most readily with 
green/blue/hazel/gray
>eyes.
>
>What do you think?  Plausible?  I would be pleased to help do the
>experimental on this ... especially the high blood pressure portions.
>
>

I can only tell you what I have seen. It does not happen often, in fact 
I have only seen it twice in 20 years of acquaintance.  The mind state 
it is associated with would be something like  'glorious jubilation'/, 
expansive extasy --nonsexual.  In depressive, low energy moods/mind 
states the color becomes 'dead algae/grey.  Normally it's olive 
green/gray, (hazel).  The color change is very dramatic - it really 
looks like looking at a pale blue sky through a chunk of ice.  Now, her 
eyes also mimic (reflect?) blues and greens worn above the waist, but 
remain olive/gray/green when wearing yellows, whites, reds. My 
understanding of hazel eyes was that they were generally  known to 
adapt/reflect hues in clothing as noted above. Is this not correct?  
However, she is the only person i am aware of whose eyes turn blue in 
the manner just described.  The phenomenon is totally objective.  Any 
ideas as to (1) the mechanism governing 'hazel' iris color adaptation to 
surroundings and (2) the special case of the crystal blue change 
generated without question by highly charged, positive, expansive 
emotional states?