Its relatively rare for people to have allergies to food colorings. While research has suggested that some food colors especially used in large amounts may have cancer-causing effects these are not among the current FDA-approved colors. Pin On Coloring Pages Food coloring implies that it is non-toxic as it is used for food but anything else with the food coloring could be problematic or if food coloring gets into the water bowl and it changes the smell appearance or taste in a way the cat does not like the cat make refuse to. . However other organizations such as the Center for. A lot of bird lovers are concerned about the safety of food coloring in hummingbird feeders. Are some food dyes worse than others. But thanks to the natural rainbow of foods available in our world safe homemade alternative food dyes are possible. For instance an August 2005 study in the Archives of Disease in Children which included 1873 three-year