Sugarflair Spectral Blood Red Food Colouring Paste, Highly Concentrated Food Colouring for Buttercream, Sugar Paste, Royal Icing, Cake Decorations and More! Vibrant Colour Food Dye - 400g. - Highly Concentrated: Sugarflair Colours highly concentrated food colouring paste only requires a small amount to achieve deep, bold, and vibrant colours without altering the consistency or taste of your mix.