"To make poop turn that color green, it would require far more dye than is in the typical type of A.1.," said Pamela Reilly of Indianapolis, a naturopathic doctor and certified nutrition counselor
So... not a real doctor? Why would they contact a pseudoscience practitioner for expertise on food dyes?
In my portion of the world, we get very poor information from nutrition experts. We are required to see nutritionists due to our insurance and health systems, but they are not doctors and usually all have wildly different opinions.