monster sprite editing

[madsiur]

I don't want to change the palettes at all, I want to insert new monsters using the same palettes.

You can use the same palettes for multiple monsters but if you change the order of the colors, one or more sprite will have their color mismatched. There is a lot of empty palettes that can be used and one thing you could do is export the palettes (by exporting the sprite) and use that palette on the monster you want to import in a more developed editor such as Gimp. Now when you import the monster you will have the correct palette.