Actually, this discussion reminds me of a few years ago, when a good friend of mine decided that there were not enough blue foods in the world.
So, he started dyeing his food with blue food coloring. Blue in the batter yielded blue pancakes. Blue soaked into asparagus very well. Everything he ate had blue in it, and he probably went through a cup of food coloring in the day.
The side-effect was science. He’d heard someone state that the, ahem, “cycle” took about a day, which seemed too long for his experience. Sure enough, eight hours after breakfast… blue. Not mildly, either. It looked like a giant smurf had been there.