Red. As a negative.

Red can easily be construed as a negative depending on visual influence. As seen in this photo, red is assimilated with fire, which can easily evoke fear and a sense of panic.

 

As seen in this photo red represents blood. Which is also associated with life and death, and in itself has a natural tendency to make a person feel physically vulnerable. To an individual who suffers from haemophobia, a display or photo such as this one, could create an even greater detriment to the viewer.