Yes, slightly. They are still brown BUT, under bright lights or outside, they have a greener tinge. And the overall color is lighter, under the sun or flourescent lights. They used to be more of a golden brown. No hazel at all. They still look brown, but I was taking such a low dose and noticed that little bit of a change. I have a feeling that the higher doses will REALLY make them lighter! Funny, I took a pic with my camera phone when I first noticed, to send to family members. "Look! my eyes are turning hazel!" Funny, because with the shade of brown they are, it would seem like they would become more of a golder brown. Well it makes the Iodine voyage even more interesting!