if you make the drawings in chocolat. The you can color it in using normal food color. kind of like making a painting This is how we make birthsday cakes in the bakery.hope it can help
Thank you for this input. It's a great help for newbies as my self. I'm a baker apprentis but tries to learn as much as possible at home. I can only say that everyone here is great at explaining even the small details. It's a great help....