According to "The Pigment Parade" by Lorraine Shelton,  

 The pigment cells are responsible for giving our cats colored eyes as well as colored skin and fur. An eye without these cells is blue. If the pigment cells have marched down from the neural crest far enough to give the eyes color, chances are they have progressed far enough to provide sound hearing as well. But remember how some bicolors are assymetrical? The same thing can happen in whites, causing odd eyed cats or deafness in one ear. I have seen bicolored cats with eyes that are blue on the side towards the middle of the face and copper on the side towards the outside of the face. Now THAT is an odd-eyed cat! As breeding programs consistently produce bicolored and van cats with more and more white on them, blue and odd eyes will increase in frequency in these programs. 

Taking advantage of the polygenes influencing other programs can also benefit someone wishing to increase the incidence of odd eyed whites in their lines. I have heard a theory proposed that adding bicolors to a program will increase the incidence of odd eyes. I think this is possible... if ASSYMETRICAL bicolors are used. Bicoloreds with perfectly even V blazes may even DECREASE the odd of getting odd eyes, in my opinion, because these cats reinforce the trait of symmetry.




CH Rampart of NadaSphynx

Photo above & Below are both Chocolate Mink 
per dna 
Below:  Lilac Mink the product of the two cats above that carry chocolate, dilute, point and sepia

Sphynx Eye Colors
Eyes of a different color....
All kittens are born with dark "muddy" blue eyes. The eyes then change to a lovely blue color. I have found around 6 weeks the eyes start to change into their adult color. If the kitten will have blue eyes as an adult, then the eyes will stay the blue color. These are photos of cats we have bred or cats that were brought into our home.

A "full color" cat is born with their lovely body colors. They have deep gold eyes, but occasionally they can have green eyes....


"Sepia" cats are born with color, but it is very soft and pale. These are called "thermals". They have amazing seafoam green eyes! Occasionally they can have a goldish tinge to the green. Sepia's are my favorite....

Mink cats are born white, but their color starts appearing within hours of birth. They are also called "thermals". They will continue to darken for up to a year, although most of their color is obvious by the time they are about 4 months. Minks usually have baby blue eyes,
 but they can also have a goldish-green color....

Points are born solid white. These are called "thermals". Their color will start coming in around 1 week of age and will continue darkening for up to a year. Siamese are "pointed" cats. Points can have various shades of blue eyes. Dark blue eyes are very rare in Sphynx...

White cats can have blue eyes, gold eyes, green eyes, or "odd" eyes (one blue eye and one green eye). There is no way to know what eye color a white is going to produce. There is no known "odd eye" gene. Some cats seem to produce more odd eyed kittens than others..... Some say this is due to polygenes others say its pure luck...
                                 *** Note***
There are rare occurrences of odd eyes in cats that are "full color" and "non-white". This also appears to be random. Also, there is a new breed of cat called "Ojos Azules" OR "Topaz" and they have blue eyes or odd eyes. They are neither white nor thermal. Their eyes are due to a special gene found in the breed.
We happen to own one of these cats that we will be using in our Outcross program.

The Maestro of Nada was imported & will be integrated into our breeding program in the upcoming months.