I'm thinking about a project, using food grad silicone molds to make 15mm scale chocolate buildings. what I'd like to do is then use edible paints to paint them. All the tutorials I've seen about painting chocolate refer to painting the inside of a mold with molten colored coco butter, but that won't really be feasible for what I want to do.
Has anyone ever done anything like this with any success?
Yes, you can airbrush the colored cocoa butter on the demoulded pieces. Using a brush can be done too but you can't apply it too thick, and is really best for fine detailing as you get brush strokes. Just be sure of your temper. You can also control where you airbrush by spraying through a template you can cut out of paper.