To Combine Two or More Values From the Color Table

1. On the ribbon, click Raster Tools tab Edit panel Process Image drop-down menu Palette Manager.

   The Palette Manager dialog box is displayed.

2. Select two or more values from the color table:
   • Press Ctrl and click to select multiple values individually.
   • Press Shift and click to select a series of multiple values.
   • Click and drag in the color table to select the values within a rectangular window.
   • Click the Select Color button to pick a color directly from the image. For more information, see Selecting a Color Directly from the Image.
3. Click the Combine button, or right-click and click Combine on the shortcut menu. The Target Color dialog box appears.
4. Select a new color from the color table in the Target Color dialog box.
   Note: The last selected color is selected by default in the Target Color dialog box.
5. Click OK to close the Target Color dialog box.
6. In the Palette Manager dialog box, click Apply.
7. Click OK to close the Palette Manager dialog box.