A gimpsed photo before and after an eye color change.
Author Yoshi Toshibo for Gimps.de with Eye Color Software Gimp. Translation Moris Garon.
A baby, infant, newborn or child receives the eye color
from his genetic mother and father.
The genes are responsible for determining eye color of a baby.
The most common eye color of a baby is blue.
One year after birth, a common baby change his eye color
to hazel, green, gray, brown. Other human babies keep their
natural baby blue topaz eye color for life.
You can predict and determine the eye color of a grown child
by feeding an eye color calculator that determines eye color by
using eye colors of mother, father and the eye colors
of their parents.
Select the iris of each eye with gimp's selection tool lasso
Make the selection soft by using the Select > Feather dialog
to avoid sharp edges, corners and stripes on the edge of your selection.
I used a value of 7 px to make the selection in my image soft.
Use the Filter > Colors > Filter Pack
-dialog to change eye color with Gimp.
This filter allows you to change eye color by changing
the hue, saturation and value of all colors in a selection.
Click on the hue that you would like to enhance. Adjust the saturation and value after you change the color to your desired hue. I used a roughness of 0,15 = 15% to change eye color in my image gradually.