Imagine seeing someone with odd-colored eyes: blue on one side ... in iris pigmentation that causes the eyes to have different colors (odd eyes), either between the two eyes or within the same ...

The team, who experimented on themselves and others, hope their findings could one day help improve tools for studying color ...

A team of scientists in California say they have discovered a new color they named olo, but you can't see the "most intense teal" with the naked eye.

which means our eyes have three different types of cone cells: red, green or blue, able to detect about 100 shades each. In combination, our cones allow us to see about a million different colours.