This is down to their color being a mix of gold, brown and green. Hazel eyes can change colors based on the lighting, the doctor notes, due to the Rayleigh effect.

Grey Cat With ‘Greenest Eyes in the World’ Belongs in the Emerald City originally appeared on Parade Pets.

If you have green eyes, you're lucky: your natural eye color is already bright and vibrant, which means there are plenty of eyeshadow options that can enhance what you already have. To narrow down ...

The greenish-brown mix of hazel eyes is an uncommon color, as only 5% of the world population have amber or hazel green eyes — and that goes perfectly with your personality. Hazel-eyed people ...

Green eyes get their color from a unique mix of light melanin and Rayleigh scattering, the same effect that makes the sky look blue. Perhaps one day, ...

Unlike with green, brown, or blue eyes, grey eyes’ colouration comes from their structure alone (OK, OK, that is pretty cool). That means grey eyes can change colour.

She asks: “Why did our eyes evolve to see many shades of green?” Rods and cones Before we consider the evolutionary benefits, we first need to understand how humans perceive color.