I noticed recently in a photo that my eye color changes depending on the angle. My eyes are dark gray. Some days they look very dark blue, most days just gray. In a photo where I was looking up I noticed my eyes were very pale green, not the least bit gray or blue. My mother has blue eyes, my father has pale green eyes. I took a few other photos looking different directions and noticed they are green in every photo. I thought that was normal so I took a picture of my mom, brother (his eyes are gray blue as well just much lighter than mine) and some friends who have blue eyes at an angle. Their eyes still looked very blue. Any idea why mine would be green green? I don't think they were like this when I was younger, in fact they use to be more blue when I was little. Side notes which are probably irrelevant but who knows? I am partially color-blind and I am also nearsighted and a life long sufferer of migraines. I'm just very fascinated by this and wondering if it's "normal".
Link to pictures to show color difference: