How to make red velvet cake? 10 points best answer :-)?

hi, recently i tried to make a red velvet cake, but i must have done something wrong because it turned out pink! in the end i put loads and loads of colouring in and it still stayed pink, would it be something to do with the fact i didnt use a whisk? or i put it in at the wrong time? or it was natural colouring? please help! thank you very much :-) xx