How to replace a color on a downloaded image

[RachaelB]

I'm writing a history book that requires the use of maps that I've downloaded. One of the maps is not black and white - it's actual a purplish color. Is there a way that I can change the purple color to all white or at least a very light color without degrading the black lines and text on the map?

[Kathy_9]

Without seeing the actual image it's hard to say what would work best. You could try converting the image to B & W or desaturating it.

If you need help with either of the above let us know and also state which version of PSP you are working with.