Fridge magnet minigame for renpy (Patreon)

This weekend I've created a fridge magnet minigame, Now you can give the players the option to leave notes in the game.

The idea was simple, but presented several challenges, like how to make a pseudo 3D effect for the magnets, how to deal with color variation and how to handle rotating. I've managed to figure those 3, the only challenge remaining is writing an algorithm that reads what the player have left and provide it as useful text that you can use further in the script.
The code is in the attachments