red
The pigmented tunic you are referring to is the choroid, which contains melanin that absorbs excess light and prevents it from scattering within the eye. This helps to improve visual acuity and reduce glare.
They're a deep blue.
Michael Emerson's eye color is blue.
Eye colour has nothing to do with seeing colour. The colour in your eyes comes from pigments (like those in your skin). Colour is perceived by photoreceptors in the back of your eye - these are entirely unrelated to the pigments.
Dwayne "The Rock" Johnson's eye color is dark brown.
The Retina
The Black Mamba gets its name - from the colour of the lining of the inside of its mouth. The overall colour of the snake's skin is olive green - but - the inside of its mouth is jet black.
The lining of the visible outer surface of the eye is called the conjunctiva. It is a thin, transparent layer of tissue that covers the white part of the eye (sclera) and lines the inside of the eyelids. The conjunctiva helps protect the eye from foreign particles and infection.
They're not actually black - they're olive green. The black refers to the colour of the lining inside their mouths.
Fazer's eye colour is brown, Tulisa's eye colour is blue and Dappy's eye colour is brown
The colour of Mad-Eye-Moody's special eye is 'ELECTRIC BLUE'
The Black mamba isn't actually black ! It's body is a beautiful olive-green colour all over. The 'black' comes from the lining of the inside of the snake's mouth. The tissues are jet black in colour.
The inside lining of a clam shell is called a nacre. It is soft and smooth and helps protect the clam.
Your eye colour could change ...... depending on who your are . (Jacob Black is AWESOME)
Lining
The soft lining of the uterus sheds monthly. I suppose you could "scratch" it, but it would be the equivalent of the wind blowing at the tear film of your eye.
The reflective layer in the lining of the eye is called the tapetum lucidum. It is a layer of tissue located behind the retina in animals that helps enhance night vision by reflecting light back through the retina.