Yeah, I read about the color pigmentation changing with age. My siblings I think were all born with blue eyes and they darkened to very dark brown as they grew older. So it would make sense for my eyes that were a very bright blue when I was very young to shift to a more blue/green hazel shade.

I also don't believe the color literally shifts. I think that it changes with the lighting and colors. However, if it changes with the lighting, that would mean that basically all light colored eyes change because color is very easily influenced by the colors around it. A dark eye color however would not be so easily influenced which is why shifting from light brown to green in hazel eyes is so significant. Shifting between blue, green, and gray isn't as significant in my opinion because the colors are so close to each other at baseline. However, I obviously have some yellow in them which is characteristic of hazel eyes as well as green eyes. Because of that, I hesitate to put them in the category of blue because blue eyes lack the yellow pigmentation. I'm also unsure about calling them hazel because there is not much brown in it if at all if you look at the higher resolution photo on the right.

I don't know. I could be wrong. It's just a fun question and pretty subjective. My driver's license says blue because I couldn't pick blue/green which is the most accurate color in my opinion. Luckily, I don't think my eye color would be the absolute most important thing needed to identify me if I ever went missing or something.