cambalinho 125 Practically a Posting Shark

i know save the Image on IStream. but what isn't saved like the original: the backcolor goes to black instead stays white.
i belive that the problem is the transparent color, because isn't saved on IStream.
i had tryied use the ColorPalette(Image.GetPalette() and Image.SetPalette(), but the ColorPalette.Count it's zero), but i get an error: '2 - Invalid Parameter'.
can anyone advice me for save the gif frames correctly on IStream or just change the transparent color to false?

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