Purplelized Cheetos?!?!

I haven't had any junk food in a while so when I went to the store and saw Cheetos, I threw them in my cart. Then, when I got home, I was enjoying them and as I walked by a mirror on my way to get something to drink, I noticed that my lips looked a little purple! and I was like what in the heck is wrong?!?! I looked at the bag of Cheetos and it said it "purple-izes your tongue!". Its a limited edtion of cheesy mix. They don't leave your mouth super purple, but they should just for fun.