Start this recipe by brushing 6 disposable round foil tins with a little melted butter. Cream together the butter, sugar and vanilla until light and fluffy. Then, add eggs one at a time followed by a little of the flour and mix well, before adding remaining flourand baking powder. If the mixture is a little too stiff, add in the milk. Next, divide your mix into 6 bowls and mix in the different colours. Divide the colours into the prepared tins and smooth out. Pop them into the oven at 170`c and bake for approximately 20 minutes, taking them out as soon as a skewer to the centre came out clean. When your cakes are cool, preferably wrap them in clingfilm and pop them into the fridge for a day. When ready, mix together the the butter and icing sugar till light and uff, then stir in the cream cheese. Use to sandwich the cakes together and decorate with sweets and sprinkles.