hotarrows223 demonstrates how to manipulate the eye color in a photograph using the masking tool. First, you must open the image with the eyes you intend to work on with Photoshop CS3. Next.], you must zoom in on an eye. You should be at the point where the iris fills up more than half of your screen. After that, you must select the iris, outlining it with the selection tool. Then, select image>adjustments>Hue/Saturation. Make sure all the boxes are checked, then adjust the hue or color bar to change the color and shade. Once you achieve the desired hue, hit ok to close the Hue/Saturation box. Just deselect, then save it and you are done.