Screenshots - Choose a color from an image
You may also pick a color from an image in your photo library or take a picture with the camera and pick an image from there. This application also remembers the last image you used so you can easily select more colors from the same image.
Once an image is selected you get the color you want in the center of the cross hairs. A magnifier shows an enlargement of the colors around the center. Tap the Pick button to select the color. You can also zoom the image in or out to help find the color you need.