Really loved the demo so far. A funny fact is that I had a similar idea a long time ago and red would also be the first color to appear, red really has its charm, doesn't it? haha
In spite of the atmosphere a bit focused on mystery, the dialogues make the game very friendly and positive, great balance.
A small problem I found (and which actually isn't a development bug but the way godot identifies the gamepad) both in the right stick axis and in the action buttons some were identified and some weren't. This can happen to any player who tests the game with a generic controller, which often comes with the numbering changed for each key. But in case it is a recurring problem in the future, it is very easy to solve by creating a screen to remap the gamepad buttons.
I'm really looking forward to chapter 2! Keep up the good work! :)