Board Thread:Speculation House/@comment-17720343-20130828002050/@comment-17417996-20130903011858

I said I met  someone with natual amber/yellow eyes over ten years ago and unfortantly I lost contact with him and have no picture of him. But in searching for your proof of these two colors in humans here it is...

violet [http://wiki.answers.com/Q/Is_there_such_thing_as_violet_eyes "The truth-- I am in my final year of an Ophthalmology fellowship. After four years of med school, five years of residency and my fellowship I can definitively state that violet eyes do exist and are natural. They are exceptionally rare. The iris has essentially three layers. An outer thin layer, a middle spongy layer, and a thin backing layer. Any and all of these layers can have varying degrees of melanin in them. The middle spongy layer also contains proteins that can be yellowish. The more melanin=more brown. Less melanin=bluer. Yellow proteins+blue=green. Yellow proteins+brown=amber. Hazel eyes are caused by any mix you can think of. This is an oversimplified explanation, but correct. Violet eyes are a kissing cousin of grey eyes (which also appear different colors based on the surrounding conditions). Grey eyes only have a small amount of melanin and it's only in the back-most iris layer and have no yellow protein. Violet eyes have almost no melanin and the purple color is caused by the blood vessels in the retina showing through. Red+Blue=Purple. Any less melanin and one would have pink albino eyes."]

also "Although the deep blue eyes of some people such as Elizabeth Taylor can appear violet at certain times, "true" violet-colored eyes occur only due to albinism."

Amber/Yellow "Amber eyes are of a solid color and have a strong yellowish/golden and russet/coppery tint. This may be due to the deposition of the yellow pigment called lipochrome in the iris (which is also found in green eyes).[24[25] Amber eyes should not be confused with hazel eyes; although hazel eyes may contain specks of amber or gold, they usually tend to comprise many other colors, including green, brown and orange. Also, hazel eyes may appear to shift in color and consist of flecks and ripples, while amber eyes are of a solid gold hue. Even though amber is considered to be like gold, some people have russet or copper colored amber eyes that many people mistake for hazel, though hazel tends to be duller and contains green with red/gold flecks, as mentioned above. Amber eyes may also contain amounts of very light gold-ish gray. The eyes of some pigeons contain yellow fluorescing pigments known as pteridines.[26] The bright yellow eyes of the Great Horned Owl are thought to be due to the presence of the pteridine pigment xanthopterin within certain chromatophores (called xanthophores) located in the iris stroma.[27] In humans, yellowish specks or patches are thought to be due to the pigment lipofuscin, also known as lipochrome.[28] Many animals such as canines, domestic cats, owls, eagles, pigeons and fish have amber eyes as a common color, whereas in humans this color occurs less frequently."]

both colors are listed in the following article called "Most Rare Eye Color"