I make my kids' birthday cakes each year. It's always a surprise theme based on something they've done that year or particularly liked. I'm not artistic so I'm not good at decorations but I generally do pretty well by using Pinterest and finding ways to make decorations out of other foods and although it's always going to look a bit like an 8 year old made it my kids really like it and look forward to the surprise.
This year I need small blue men. I can't make them out of fondant etc as I'm no good at modelling. So I'm thinking mini gingerbread men. I've used gingerbread men before as figures and decorated them with icing to be whatever. Can I colour the gingerbread dough blue before I bake it? Or would I be better off using food paint on plain gingerbread or just icing them blue? My usual rule is that it is all edible.