Adobe 23101335 User Guide - Page 344
Editing colors, Shifting to Web-safe colors, Choose Select All Web Safe Colors from the Color
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334 CHAPTER 12 Optimizing Images for the Web To select colors based on a selection in the image (ImageReady): 1 Make a selection in the image using the selection tools or the Select menu commands. 2 Choose Select All From Selection from the Color Table palette menu. To select all colors: Choose Select All Colors from the Color Table palette menu. To deselect all colors: Choose Deselect All Colors from the Color Table palette menu. Editing colors You can change a selected color in the color table to any other RGB color value. When you regenerate the optimized image, the selected color changes to the new color wherever it appears in the image. To select all Web-safe colors: Choose Select All Web Safe Colors from the Color Table palette menu. To select all non-Web-safe colors: Choose Select All Non-Web Safe Colors from the Color Table palette menu. To view selected colors in an image (ImageReady): Select the optimized image. Then click and hold a selected color in the Color Table palette to temporarily invert the color in the optimized image, enabling you to see which areas of the image contain the color. To view a contiguous group of colors, press Shift and click and hold another color. All colors in the rows between the first and second selected colors are inverted. To view a discontiguous group of colors, press Ctrl (Windows) or Command (Mac OS) and click each color that you want to select, and hold the mouse button down on any color in the group. To edit a color: 1 Double-click the color in the color table to display the default color picker. 2 Select a color. A small black diamond ( ) appears in the center of each edited color. The edited color replaces the original color in the image. Note: Editing a color also locks it-a white square appears in the lower right corner of the color. (See "Locking colors in the color table" on page 335.) Shifting to Web-safe colors To protect colors from dithering in a browser, you can shift the colors to their closest equivalents in the Web palette. This ensures that the colors won't dither when displayed in browsers on either Windows or Macintosh operating systems capable of displaying only 256 colors. (See "Previewing and controlling dithering" on page 341.)