Well, generally speaking, people are born with the certain eye color. And eye color will not change over time, except for some special reasons. And you should know that the color of the eye's iris can vary dramatically between individuals due to genetic differences. And adult individuals with light eye colors may experience gradual eye color change as they get older. And in common, the color of the eye may get darker because of changes in melanin production due to advanced age. So you can just check it with your own situation. By the way, according to some experts, when the eye color of an adult changes from blue to brown or brown to green dramatically, it is called heterochromia. So just be careful about it.