This image was taken by more girlfriend, Kaitlynn Little. I started by making a selection of the original photo around the eye, and moving it to its own layer. After that, I used adjestment layers to remove all color from the original photo. I then used the hue and saturation adjusment to pull out the red, and only the red of the eye. I then used the vibrant adjustment to make the color more vibrant. The other color was a happy accident. At the time I had not realized that there was some blue and black around the eye.