Sensing Eyecolor?

So I had a reading on a lady skeptic during which she was sitting with her back facing me. My strongest perception of her was that her eyes were unusually brown. I had this perception several times. Meanwhile her complexion was fair and her hair a reddish brown which made me logically convinced that it couldn't be true that her eyes are so brown as what I was seeing. After the reading as she turned around I saw that her eyes were in fact unusually brown. She said that she all the time gets comments on her eyes being brown, even that some people say that her eyes are so brown they look like "poop". She has strikingly beautiful brown eyes.

This is my first "perception" of eyecolor, and I do believe it came about because her eyecolor is so strikingly unusual. The perceptions that jump out at me as obvious are always when something is "unusual" about a person. Can I detect eyecolor even in cases when it is not unusual? Could detection of eyecolor become the basis for future tests of my paranormal claim of medical dowsing?

Although

I may have seen her eyes before the reading even though I was trying to look away. I have no guarantee that I did not see her eyes before the reading. Still, had I subconsciously seen her eyes, I may have had it easier to believe what I was "perceiving". I also did not write this perception down, so there is no evidence that it was not ad hoc (ie. after the fact postdiction) and there is no evidence that I did not have prior awareness of her eyecolor, though if I did it was in the subconscious form since I was having a hard time believing in it logically, or consciously. But this is irrelevant. The question is, could I sense eyecolor in future cases?

Suitable for a test

• There would no longer be a shortage of persons for a test. Whereas it is hard to find persons who are missing a kidney or a uterus, everybody can volunteer for a test of dowsing for eyecolor.

• Medical ethical concerns are no longer a problem. Whereas who has a missing organ can be sensitive and private information, nobody is offended by having the color of their eyes known. What this means, is that I can finally involve members of the public in a study or a test! I would not involve non-skeptics into a test where I attempt to sense any personal medical information about them, but eyecolor is such a harmless topic that this is no longer an issue.

• No ultrasound or other medical examination needed for verification anymore. It is as easy as looking a person in the eye after the reading and asking whether they have colored contact lenses in. And an actual test would employ a nurse, doctor, or optometrist to perform a simple confirmation that subjects are not wearing colored contacts.