All tools
Palette Customizer
GraphicsRecolor .pal files by hand or copy rows and indices from a reference palette, then export every target file at once.
Palette files
Drop .pal files to edit
Every file gets the same edits.
Drop a .pal file to copy from
Pick colors from it or copy whole rows.
Edit
Click a target swatch to paint it with the paint color, or a reference swatch to use its color. Copying takes colors from the reference into the target.