Im not good at coloring fondant but i have a cake to do in a week and the client wants fondant and the cake colors are black, pink and blue. Anyway what is the best way to color MMF Fondant .....before you add the sugar or after you have added the sugar &knead it in....can someone please help me

If you want to colour a whole batch of fondant the same colour it is easier to add the colouring in with the melted marshmallows before the icing sugar but if you are splitting the quantity up and colouring different colours then you will have to knead the colour in the dough separately to each amount when your finished making it