Red and green is the standard color for Christmas and the color for celebration, but I think it's full of drama and satire  Color.
In the《 crime scene》, the character's feet are raised a little, as if it was  self portrait. Photographing their own feet in the picture enhances a kind of abnormal sense of the murderer's extreme narcissism.
Then the hair of the dead woman is inlaid with many small things, many rings and delicate flowers, which are opposite to the sadness of falling.