I want to know how to use the MAME Pallette to toggle and switch certain sprites and items that get in the way making some arcade games hard to map. Up to now I have never used the Pallette because I relied on the freeze dip switch, but difficulty has reached its peak in my arcade mapping process. I already that F4 turns on the pallette and I only just about zoom in and out, but I don't have a clue how to toggle or switch the colours and so on. Any useful info?