Photoshop is all about color! When you select an area of an image with a selection tool and make any modifications to it, you are changing the color values of the selected pixels. There are many ways to perform color changes in Photoshop, (contrast, sharpness, lightness, and so forth) and therein lies its power.
Color can present itself on your computer display in a variety of ways. Color working spaces affect how you see color. Much of your editing depends on your perceptions of the on-screen image. Color management and color correction are critical factors in the quality of the image. This section of Photoshop CS Savvy looks at using color settings, managing and correcting color, and preparing files for their ultimate destinationwhether its print, the Web, or even video.