My eyes are similar. They still look mostly brown, but have pools of green throughout the reddish brown. However, as a child, my eyes used to be a very dark brown.
This is also true of my dad and two of my brothers. They started with dark brown eyes when younger. My dad and one brother are almost completely green now and my other brother’s hazel. I’m the youngest, so I figure it will be another 15-20 years until my eyes are green. Weird.
Am I evolving?
Maybe my eyes were brown when I was younger as well, people told me they were brown. When I was about 35 I was looking at my eyes very closely in a mirror and I said “guess what? my eyes are green with brown centers”. I never thought that they might have changed.