Herbal Teas for Picky Eaters?

I've mentioned before that my daughter is a VERY picky eater. She refuses fruits and vegetables 99% of the time to the point of rather going hungry than being subjected to eat them. It boggles my mind because when she was an older infant, she ate it all! I have a chart made for her hanging in the kitchen where she gets a sticker every time she eats something listed on it. It's a slow process. I also sneak fruits and veg in where I can, though she can usually tell. On top of it, I limit her intake of junk foods since she isn't getting the good foods.

I'm trying to get her to ingest more vitamin-rich plant-based foods. She also needs to drink more water. She prefers milk and will refuse water. She'll drink juice, but commercial juices aren't exactly healthful. (I'm looking into a juicer.)

My next idea is herbal teas. Of course, I'll make sure she only drinks teas that are suitable for children. She has recently become fond of tea parties, and would probably enjoy cold tea as an alternative to plain old water.

Do any of you out there give your children herbal teas? I'd like to hear from you. Tell me anything about it!