This is because all water-based materials have been removed and replaced with bake & cake friendly oils; these oils mix through much better than water-based gels (which we know water repels from the oils in your baking).
Edible Food Colouring Mill Orange Oil Based 20ml Cake Decorating Sugarcraft
PME Cake Oil Based Food Colour with Precision Dropper | Orange (20ml) | High Pigment Oil-Blend Food Colouring for Buttercream Chocolate Ganache Fondant & Cake Batter
Colour Splash Oil Based Food Colour | Orange | Vibrant Edible Colour For Baking, Colours Buttercream, Cake Mix, Chocolate - 30ml
55g Oil Based Food Coloring - Vibrant Orange, Baking Essential, Fat Soluble Foo
2 x Colour Mill Oil Based Food Colouring 20ml (Orange and Yellow ) - New
Colour Mill Food Colouring Orange 100ml - Next Generation Oil Based Food Colouring for Baking, Decorating, Icing and Cooking Food Dye DIY Slime and Crafts 100ml