The picture is cute, i tried this with liquid food coloring, and turned into paste, horrible. I looked for powdered food color and the don't have it in my town, too small i guess. disappointing. Great idea.
This is a cute idea, my grandson loves Nutter Butters and will enjoy them. One note, if you use white chocolate you cannot use regular liquid food color, it won't blend with the chocolate. You must use powered color, found in the cake decorating aisle.