This might help:
0x462F14- Pointer to circle that Oak stands on.
0x12F870- Pointer to bg graphics.
0x130DE4- " " "
0x12F878- Pointer to the raw for the bg graphics
0x130E34- " " "
Tile image properties:
Must be a total of 50 tiles. However, the first two tiles need to be completely transparent. IE, only using color 1 of the palette. and the last 3 tiles could be lost, so don't put anything important there. This brings you down to 45 tiles.
I have no idea where the palette is, but you should be able to find that.:D
and yes, when I say tiles, I mean the 8x8 ones.