Seems like the button business from earlier is finally making sense. In this room, there’s four buttons you can press, a BLUE one, a YELLOW one, a GREEN one and a RED one.
You decide to press the YELLOW button, as that’s what you heard was right.

You press the yellow button. All the other buttons disappear and the room turns yellow. Woah! Also, it starts accelerating, meaning that it was an elevator all along.
Isn’t that crazy? When it stops, no new doors appear, but it seems like the one you’ve entered through has something different behind it. LET’S MOVE.