You can edit 8bit palettes prior to saving with the palette editor. This is
useful if you want to optimize the palette, but since MainActor VE changes the
color indices while optimizing the palette it is necessary when you want to set a
specific color index as color 0, for example if you want to save the color as
transparent with the GIF saver.
With the color editor you always have full control over the palettes you save
in your 8bit animations or pictures.
The palette editor is able to load/save your palettes, this way you can load
in any custom palette you created with other programs (or MainActor VE) for
saving.