Technically, there are only blue eyes and brown eyes. All those people with green or hazel eyes like me are actually blue-eyed people with a toxic yellow overlay. As you begin to detoxify, your eyes will become more blue again. However, it usually takes years for this to happen.
Also, in blue-eyed people you can see the brown area around the iris that is actually a mirror of the colon. Where there are bulges in the pattern in the eyes, there are corresponding irregularities in the colon. For more information on this topic, research iridology.
Eight years ago I had photos taken of my irises with a special camera and have been tracking the changes~fascinating!