Except for breeds that naturally have blue eyes, eye colour usually begins changing to the permanent adult colour at around 6 weeks of age, though this process may begin a little earlier or later. Albino cats’ eyes are sensitive to light. Tomblan Burmese - Home Of Burmese Cats Burmese Kittens Baby Cats Burmese Cat Few cat breeds retain their blue eye color into adulthood. When do burmese kittens eyes change colour . Once a kitten’s eyes have developed completely, by about 3 months of age, his eyes should be done changing color. At around 6 to 7 weeks of age, a kittens eyes may begin to gradually change color. It is important that, when being judged, the eye colour of all the cats in the class should be assessed under identical light conditions. The age at which a kitten’s color changes: Most kittens, when their eyes open at about 2 weeks old, have light blue eyes, and johnson said that over the next month or two the eye color changes to the color it will be throughout her ...