It is basically a mutation of genes between the mother and the farther. E.g. The sun! It can affect these genes to do all kinds of stuff.
Brown, Blue, Green, Hazel, And Grey.
It depends what they have been eating.According to this linked website, it ranges from red-brown, brown, blue-green, grey-green and yellow-brown.
Llwyd (grey, brown, pale, hoary)llwydwyn (light grey)glas (blue/green grey)
Louis blue niall grey brown harry grey green zayn red Liam navy blue
Brown, then green, then blue, then grey, then pink or violet.
Blue, brown, green, grey, hazel, or violet (which is really rare).
The color of your Iris which can be brown black green blue or grey.
blue green torquise grey indian brown hotpink
Llwyd (brown; grey; pale; hoary) surname 'Lloyd' Llwydwyn (light grey) Glas (blue, green grey)
A seahorse can be many different colors. Such as- brown, yellow, red, grey or spotted.
Depending on who you ask, his eyes are blue, green, grey, brown, hazel or amber.
green but they change to grey or blue also :)