05-12-2020, 08:55 AM
With the Indexed Mode, the image has a limited set of colors ; you can see them with Windows > Dockable Dialogs > Colormap.
If the "fuschia" color is not in the colormap, Color Exchange will use the nearest color available in the colormap.
If the "fuschia" color is not in the colormap, Color Exchange will use the nearest color available in the colormap.