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Replacing Color

The Replace Color command does just what you would expect it to do, and does it very well indeed. In a nutshell, it allows you to select a specific color, either across an entire image or in an isolated area of an image, then change not only the color, but its saturation and lightness values as well. Eyedropper tools let you add and subtract colors to be replaced, while a slider control softens the transition between the colors you choose and those around them. We’ve seen this used to great effect on projects varied as experimenting with different color schemes before painting a house’s trim, to changing the color of a favorite uncle’s tie so that it no longer clashes with his suit. (See the color plate section of this book for a full-color example.)

To replace color across an entire image:

From the Enhance menu, choose Adjust Color > Replace Color.

In the Replace Color dialog box, click the Selection button under the image preview box (Figure 3.39).

Figure 3.39. Buttons under the image preview box, let you choose whether to view your color selections or the image itself.

When the Replace Color dialog box is open, your pointer will automatically change to an eyedropper tool when you move it over your image.

With the eyedropper tool, click in the image to select the color you want to change (Figure 3.40).

Figure 3.40. Click the actual image in the image window to make a color selection.

The color selection appears as a white area in the image preview of the Replace Color dialog box (Figure 3.41).

Figure 3.41. The image preview area of the Replace Color dialog box shows selected colors as white or shades of gray.

To expand the selection and include similar colors, drag the Fuzziness slider to the right. To contract the selection and exclude similar colors, drag the Fuzziness slider to the left.

You may want to expand or contract your selection beyond the limits of the Fuzziness slider. If parts of a selection fall too heavily in shadow or highlight, or have very reflective surfaces, you may need to make additional color selections or deletions.

To add a color to the selection, Shift+click the eyedropper tool (Windows and Mac) in another area of the image. To subtract a color from the selection, press Alt+Click/Option+Click.

The dialog box contains separate add and subtract eyedropper tools, but the keyboard shortcuts provide a much more efficient way to modify your color selections.

With the Preview check box selected, drag the Hue, Saturation, and Lightness sliders (Figure 3.42) until you achieve the desired color effect.

Figure 3.42. Drag the Hue, Lightness, and Saturation sliders until you capture the right color effect. You may have to experiment a little until you get it just right.

These sliders operate just like the ones in the Hue/Saturation dialog box. The Hue slider controls the actual color change; the Saturation slider controls the intensity of the color, from muted to pure; and the Lightness slider controls the color’s brightness value, adding either black or white.

Click OK to close the Replace Color dialog box and view your corrected image.



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