Patch: allowing use of "reserved" palette colors for player characters

I want to request a little bit of help from someone.

There are a couple of points in the game where the whole screen turns sepia or grayscale. Flashback sequences, like the one with Terra killing imperial soldiers, and also the ending. I want to see if new colors/palettes appear correctly in those scenes. Does someone have a save state right before at least one of those points?

I also want to test out the Chocobop ability from Setzer's slot. Does anyone happen to know a cheat code that will make him always use that attack, without having to land on the right slot?