Thank you for that information, Clew!!! I will look at those links right away. I haven't had any food or drink with blue coloring in it. The only thing that stands out to me is that on that final plain water rinse, the temperature was quite warm...almost HOT. It felt fine when I checked with my hand, but it was very, very warm. Maybe it burned something out?
I know I have Candida overgrowth, but I've never heard of it being blue.