Need help in obtaining these "Super Paper Mario" materials...

[MeritC]

Yep, an all new case here -- here are the details:

This morning, I just had a great fangame idea which would require using materials from Paper Mario: The Thousand-Year Door and Super Paper Mario. However, after checking through the stuff that RII extracted, I'm still trying to find out if anyone had any luck in extracting certain background materials from the Super Paper Mario game itself.

Specifically the background materials from this screenshot (especially that background itself with the mushrooms, flowers, etc.) and this screenshot (specifically the box/background when the game has important messages for the player to read).

Thanks in advance to anyone who responds with a breakthrough on this.