In-Game sprite editor - editing

Are there any programs for editing FF6 sprites IN-game that are open source, or that otherwise have editable pointers for loading sprites from the ROM and what language are they in?

I'm so rusty with programming doesn't really matter what language it's in, be it C+ or Klingon, I'll be guessing and pulling code out of my ... regardless.

For me, I just upload some sprite and edit directly using "FF3SE" English in the utility's graphic editing section throughout my hacks. 

Its simple and does not require any coding. And yes, IN-GAME sprites are there too. Just remember snes rom have limited free space for sprites. Just reskin existence one.

https://www.ff6hacking.com/wiki/lib/exe/...se_212.zip