To Change the Color Map of an Image

1. To display the Image Manager toolspace, on the ribbon, click Raster Tools tab Manage & View panel Manage.
2. Select the Image Insertions view.
3. Select the image insertion for which you want to change the color map, right-click and click Edit Color Map. Depending on image type, the applicable dialog box opens.
   Note: If you edit an existing palette color map that is used by several images in the drawing, the changes will affect all of the images. To affect only one image, you can assign the color map that is closest to what you want, then copy that color map and rename it.
4. Make changes as required.