I went somewhere recently where there were the MOST amazing red velvet cupcakes - BusyBee's opening (another story). The person who made the cakes was there and she said (I think I have this right) to get a proper red colour, you have to use artificial red food colouring because natural colouring will just go brown.
If they are falling apart, I think you've overmixed the batter.
If they are falling apart, I think you've overmixed the batter.