Dave left the trap room and made for the fourth door.
He found himself in a room with some levers on the wall to his right..
He walked through the door into a square room, bare of anything except for seven levers lining the wall. Each lever had a different colored handle.
He noticed there was a seam in one of the walls.
"That should be where the crimson box is hidden, it looks like the hidden doors in all of the other rooms."
He turned to inspect every inch of the room. He pressed on the walls, checked the floor, looked at the ceiling, but didn't find anything worth of note besides the seven colored levers.
He took some time to ponder before touching anything.
He noticed the handles were actually the seven colors of a rainbow, but out of sequence.
Then he pulled down on the red lever which was the middle one.
The moment he did, he heard a loud sound.
"Dooooo"
It was like a bell.
The lever stayed down and nothing else in the room changed.
Dave frowned.