In the context of the scary story, the red of the wristband might be related to some kind of evil force. It could be that the red is the color that attracts malevolent spirits. When people wear the red wristband, they become beacons for these dark entities. It's as if the red color is a connection to a world of nightmares and horror, and it's what makes the whole situation so terrifying.
One possible scariest plot could be that the red wristband is a mark of a cursed group. People who wear it start experiencing terrifying hallucinations of dark figures following them everywhere. They can't take the wristband off, and as time passes, they slowly lose their sanity, haunted by the unending fear of the unknown entity associated with the wristband.
Yes, there are some. For instance, there might be stories where red roses are part of a cursed item. Maybe a witch placed a spell on a bouquet of red roses, and anyone who receives them will have a string of bad luck or be haunted by nightmares.
The color red is often associated with danger, blood, and aggression. So when it's on a mask in a scary story, it immediately gives a sense of threat. Also, a mask hides the face, creating an air of mystery. We can't see the emotions or intentions of the person (or thing) behind it. It could be anyone or anything, and that uncertainty is very frightening.
Well, it could be the way the red roses are used as a symbol in the story. Maybe they are left at the scene of a crime or they are associated with a creepy character. For example, if a serial killer leaves a red rose at each murder site, that would be really scary.
Once upon a time, there was a guy with red short hair. He lived in an old, creaky house at the edge of town. One night, he heard strange noises coming from the attic. When he went to investigate, he saw a pair of glowing eyes in the darkness. He was so scared that he ran out of the house and never went back.
It might have a moral about facing your fears. The characters in the story who encounter the Red Man have to deal with their terror. So it could be teaching us to be brave even when we're really scared.
In the 'the red piano' scary story, the red piano could be a central, haunted object. It might be possessed by some malevolent spirit. For example, it could play on its own at midnight, creating an eerie atmosphere in the story.