Maybe one of these similar products would be of interest:-

McCormick Assorted Food Coloring Egg Dye Red Yellow Blue .5 oz each

McCormick Culinary Blue Food Coloring, 16 fl oz - One 16 Fluid Ounce Bottle of B

McCormick Culinary Blue Food Coloring 16oz Bottle for Cakes & Icing

Wilton Royal Blue Icing Color, 1 oz. - Blue Food Coloring

DecoPac Royal Blue Food Coloring, 8 Fl Oz Airbrush Food Color