You can edit only user libraries.

1. In Proofer Viewer, from the Configure menu, select Color Database Editor.
2. In the Color Database Editor, Color Libraries list, select the user library you want to edit.
3. In the Colors list, select the color you want to edit.
4. In the Alternate Color box, modify the color recipe parameters as required.
5. Click Apply.

The Colors list automatically updates the color swatch beside the color name, and the modified recipe is saved.

Note: If you do not want to save the new color recipe, click Revert. The color recipe reverts to the previously saved recipe.