06-09-2015, 04:42 PM
The way most of us ripped from MAME was we take two shots of the screen: one is for the actual palette, the other is an alternate palette where the black part of the sprite is a different color. Then we use whatever graphics software (with at least layers and the magic wand) we use to select the colors of both shots, invert selection, and change background to something. I still use an old version of MAME so I don't know if a new version is different.