The Match Color adjustment makes the colors in one image resemble those in another image. When you open the match color dialog box, you can easily copy the colors from one picture to color another picture. You can use the Luminance (lightness) and Color Intensity (saturation) options to make the colors match better. Also you can modify the Fade slider to use more or less of the source document's original color. You can read more things about color matching in Photoshop from this changing colors in Photoshop tutorial for beginners .