My eyes are hazel but more on the light end.
They do change colors at times from a gray to green, to a medium blue. But they tend to lean more towards green.
I have flecks of brown in them but not allot. I have seen various colors of hazel eyes. My sister has the lighter brown/golden version while my brother’s are a dark brown and my daughter’s a dark chocolate soul searching almost blackish brown:
From the Wiki:
Hazel eyes are due to a combination of Rayleigh scattering and a moderate amount of melanin in the iris’ anterior border layer. Hazel eyes often appear to shift in color from a light brown to a dark golden-green. A number of studies using three-point scales have assigned hazel to be the medium-color between the lightest shade of blue and darkest shade of brown. Hazel mostly consists of Brown and Green. The dominant color in the eye can either be green or light brown/gold. This can sometimes produce a multicolored iris, i.e., an eye that is light brown near the pupil and charcoal or amber/dark green on the outer part of the iris (and vice versa) when observed in sunlight. Hazel is commonly found in Europe, the Middle East, Americas, Central Asia and parts of South Asia.
Definitions of the eye color hazel vary: it is sometimes considered to be synonymous with light-brown or gold. In North America, hazel is often used to describe eyes that appear to change color.