Memory minigame for renpy (Patreon)

This weekend I've started with a match3 idea, but I had to postponed it because I wasn't getting any result. I have to study that topic and come back to it later.
Instead I've made a memory minigame akin to simon.
The minigame is almost complete, and you can use it in your game as is, but there are few finishing touches I want to add before calling it done. Unfortunately I've ran out of time and they have to wait till next weekend.
The code is in the attachments. Give it a try and leave a comment if you have any suggestions.