Conventional paste or gel colours are ideal for colouring sugarpaste icing but they do not really like fats or oils, so you often struggle to get proper colour consistency when using buttercream etc (see below ).
Edible Food Colouring Mill Of 6 Oil Based 20ml Cake Decorating Sugarcraft
Edible Food Colouring Mill 20ml Cake Decorating Sugarcraft - 48 colours
Edible Food Colouring Mill White Oil Based 20ml Cake Decorating Sugarcraft
Edible Food Colouring Mill Sage Oil Based 20ml Cake Decorating Sugarcraft
Edible Food Colouring Mill Midnight Oil Based 20ml Cake Decorating Sugarcraft
Edible Food Colouring Mill Rose Oil Based 20ml Cake Decorating Sugarcraft