A little black will make it a double whammy. What you see above is a delicacy prepared for the annual food party held at the end of the author's color course at the University of Hawaii. In case you're wondering what the pink stuff is, it's spam. Other coloring agents are toxic. Dramatic results can also be achieved by using a blue light bulb for your dining area.
Blue food is a rare occurrence in nature.
Consequently, we don't have an automatic appetite response to blue. Furthermore, our primal nature avoids food that are poisonous. Just the sight of food fires neurons in the hypothalamus. For the sighted, the eyes are the first place that must be convinced before a food is even tried. This means that some food products fail in the marketplace not because of bad taste, texture, or smell but because the consumer never got that far.