I need to get hold of some red food colouring to make DS's second birthday cake next week (it's going to be a pig, for anyone's who interested). I looked at the one they sell in Waitrose and it's entirely made of E numbers, including Sunset Yellow and Ponceau 4R, which I dimly remember reading are officially Not Good. Is it possible to get hold of more natural colours (without going to a vast amount of trouble)? Or am I just being unbelievably precious given that we're only talking about one cake?