Red Velvet side effects

Hello all, I love to try new recipes and being from Canada I wasn't too familiar with red velvet. I tried a few crappy recipes and finally tried the one on the Wilton website last week. I was kinda hesitant on using the color gel but went ahead and followed through, although I could taste the color they still tasted pretty good the only problem was went it came time to do the doo in the bathroom. Hate to be graphic but it was pretty much red!!!!

Is this normal and does anyone has a real recipe that does not include oil and water? I really like using buttermilk

tks in advance