But there are a couple of differences between blue jays and New Yorkers. The color doesn't come easily because true blue pigment doesn't exist in plants. Blue raspberry is a common flavoring for candy, snack foods, syrups, and soft drinks. Blue food is a rare occurrence in nature. However, it is exceptionally rare because compounds that absorb in the requisite range of electromagnetic spectrum are extremely rare and difficult to produce biologically. Many kinds of flowering plants do not include any blue-flowering varieties, though people go to great lengths to create them. There actually is no such thing as a blue bird. True blue flowers are natural rarities, and their color secrets aren't readily shared. Allergic reactions. Blue Dog Food Homestyle Recipes (Canned); Blue Dog Food Life Protection (Dry); Blue Dog Food Longevity (Dry); Blue Dog Food Organics (Dry) Answer: The answer to your question involves some pretty complex chemistry, so I’m going to give just an overview. There are no leafy blue vegetables (blue lettuce? Question: Why isn’t there any naturally occurring blue food? Blue does actually occur in nature. The color in plant foods comes from natural pigments. Food scientists have always had a hard time finding reliable natural sources for blue food colorings, and for a long time, even dyed blue foods were hard to come by. Blue Dog Food is an alternative name for a group of pet foods sold by the Blue Buffalo Company… located in Wilton, Connecticut. The Dog Food Advisor’s unbiased ratings and reviews of actual Blue Dog Food products can be found here…. “Red and yellow feathers get their color from actual pigments, called carotenoids, that are in the foods birds eat,” Sillett explains. To find out why, Smithsonian Insider asked Scott Sillett, a wildlife biologist at the Smithsonian Migratory Bird Center. Why is blue an unappetizing color? But, neither are the blue jays. ), no blue meats (blueburger, well-done please), and aside from blueberries and a few blue-purple potatoes from remote spots on the globe, blue just doesn't exist in any significant quantity as a natural food color. Reactions to food dyes are often known as food intolerance instead of allergies because they are not IgE reactions 3.There is no specific allergy test for Blue 1 or other food dyes. New Yorkers can't fly (1), and, with the exception of the guys in Blue Man Group, we are not blue. They obviously look blue, but here is something that you probably don't know: There is no blue pigment in their feathers.