I'm modifying an existing animated GIF using GIMP. For some reason, GIMP opens it as an RGB file.
But after doing a color analysis it told me there are only 255 colours. That's just right!
However, when I do turn on indexed mode, it generates a new palette which degrades the image.
Even with all the blending/dithering options turned on or off, it applies a new 255 colour palette that is different from the 255 colours that are actually there.
So, how can I fix this?