Looks like there's a table of boxes and pals which are used for the FIGHT menu. The table is located at 08471E8C.
The routine which determines which box to show during battle is at 0814FFC4. In the same routine, down at 0814FFEE there's a table switch which happens depending on the value in R4. It's used to select a specific text box style.
To answer your question, 0847190C is where the palette for this Fight menu should be.
Hi, if I'm understanding correctly, you want to make all reflections run off pal 0. Aren't the reflections for all of the pals themselves? Anyways, I think the best way to do this is find the graphic loading routine for the reflection and work backwards from there. If you can find the location of this routine perhaps we can find out how to do what you want.