This patch will enable you to make custom palettes for colours 6-F of palette 8. Not only can you make a regular and fire Mario and Luigi palette, you can even seperate the player's regular palette in small, big and caped form.
Erik update: added support for the player's palette as seen in the overworld border, in a per-map basis.
My changes while moderating:
* Mentioned the overworld border support in the readme.
* Added v1.5 to the submission title.
* There was a typo so it wouldn't even assemble, I fixed that.
* I also added comments to the table you added.
Also, who goes from 1.0 straight to 1.5?
Also, are you sure that $0F50 is a good freeram?