For a project involving a client-supplied map (clip below) I need to be able to turn colored layers on and off. The client, however, supplied a flat image and vector outlines for the color regions, apparently all they can find. This is not the same as a layered image of course.
Is there some way I could remove the colors (and glow effects at boundaries) shown below while preserving the topography, and then reapply them using the vectors? Or do I need to go back to the client and ask them to keep digging for assets?