I want to make a simple re-balance mod for FF1, with some very minor modifications to the graphics. One of them is to get rid of this curious border between the four characters and the enemies. It should look like the image(plus the forest). I was able to edit the hex values in the PPU in FCEUX to get it to appear this way but once you reload the ROM it never shows again. I think it just edits the value in the current video memory but not the data for the actual battle screen. I can't find anything in the data that looks like it would contain the layout for battle screen.
I read up on what I could and downloaded all of the utilities but couldn't find anything useful for this specific problem. I'm going to try to post this image but I haven't used a forum in years so I hope it works: