Aha, excellent. I will work with it now. It has an option for the four digit code and RGB, so this should be really easy. I suppose TM will tell me the offset, so I'll go searching (I know it's the fourth square).
Edit: I'm having a slight problem with isolating Crono's squares exactly. I used the addresses in TM to find the offset roughly, but only eight of the colors were correct; I've been increasing bytes around there but I don't want to edit something I shouldn't. By chance, do you have the exact offset?
Edit: Bleha, I get it now. Well, it doesn't edit RGB values, so I'll mess around.