With the Replace Color command, you can create temporary masks based on specific colors and then replace these colors. (A mask isolates an area of an image, so that changes affect just the selected area and not the rest of the image.) The Replace Color dialog box contains options for adjusting the hue, saturation, and lightness components of the selection: Hue is color, saturation is the purity of the color, and lightness is how much white or black is in the image.
You’ll use the Replace Color command to change the color of the wall at the top of the image. The Replace Color command is not available in ImageReady.
Select the rectangular marquee tool (), and draw a selection border around the blue wall at the ...