I think tea might be a lesser evil compared to coffee.. I also steal sips of coke when I was pregnant. Anyway, do drink in moderation.
My friend drank green tea whenever she has the urge for a caffeine boost.
Up to you to believe.. but the foods we take when pregnant & bf goes a long way to molding the tastebuds of the baby. I am still bf my youngest. I actually dont't really control my diet, so long as I eat healthily and have balanced meals. I love chilli and since it didn't cause my baby discomfort, I ate. My toddler is now 17 mths old and eats kimchi.