Fear could be a main theme. The darkness of the room is associated with the unknown, and the unknown usually makes people feel afraid. It might be about how people react to the fear in such a spooky environment like a dark dark room.
The main theme could be mystery. Because a dark room often hides things that are not immediately visible, and this creates an air of mystery.
There could be hidden treasures. In many dark room stories, people find old chests filled with gold, jewels, or ancient artifacts. For example, in a story about a pirate's hideout, the dark room might be where they stashed all their loot.
In a horror story, a dark room might have a blood - stained floor. There could be a creepy doll sitting in the corner, its eyes seeming to follow you. Chains might be hanging from the ceiling, and there could be a faint smell of death. Maybe there's a hidden door that leads to an even darker and more terrifying place filled with the ghosts of the past.
There might be elements of isolation. Since it's in a room, the character could be cut off from the outside world, which adds to the sense of unease. Also, there could be objects in the room that play important roles, like old furniture or strange artifacts that add to the mystery.
The main idea is centered around the girl in the dark room and her green ribbon. It creates a sense of mystery and horror by making the reader wonder what the green ribbon is hiding and what significance it has for the girl in that spooky setting.
In an 'in a dark dark room story', a typical element is the exploration of the unknown. The dark room represents the unknown territory that the character has to face. There's also the idea of a transformation. Maybe the character who enters the dark room comes out changed, either because of what they found or what they experienced. Additionally, the limited visibility in the dark room forces the character to rely on other senses, which can lead to some interesting plot developments, like misinterpreting a normal sound as something dangerous in the dark.
There could be a ghost. Ghosts are often associated with dark and spooky places. They might float around, making cold spots and strange noises.
One possible theme could be fear. The darkness of the room can symbolize the unknown, which often induces fear in people.
Since I'm not familiar with this particular story, I can only guess. Maybe the ribbon in the dark room is a connection to a past event. A character stumbles upon it and starts to recall memories or piece together a mystery. The dark room could symbolize the unknown, and the ribbon is the thread that leads the character through this unknown, whether it's uncovering a family secret, a hidden treasure, or a long - forgotten love.
There could be a scared child. The child might be trapped in the dark room and trying to find a way out.
It could be a horror story. The repeated 'dark' emphasizes the spooky atmosphere. Maybe there are some unknown and scary things lurking in that dark room.