All natural food colors are wonderful to use for dogs. Pastries 4 Pets carries a complete line of dye free all natural food colors formulated to color our dog treat icing and dog cake frostings. Our blue turns blue, red turns red, etc... 

Ingredients may contain: Beet Powder, Red Cabbage, Purple Carrot, Pigment Yellow Iron Oxide, Turmeric, Carob Powder, Pigment Red Iron Oxide, Carrot Powder, Pigment Black Iron Oxide,  Titanium Dioxide, Tapioca Maltodextrin, Guar Gum 

Directions: Sprinkle desired amount of colored powder into your icing or frosting and stir. Store in a powder form in a cool, dark location, refrigeration is best.