So much for hard hats.
Gilly, green tea is generally pretty mild anyway compared to, say, coffee. Stash actually makes a green tea, black tea fusion that's a good compromise.
As far as iced tea goes, here's what you do: make a superconcentrated batch of your favorite hot tea (I like to go crazy and throw in a wildcard bag of a different flavor) with four or five bags in a couple inches of water. Put it in your pitcher and add filtered water to to dilute it to taste then put it in the fridge. Then on a hot summer day (or a hot January day as we had today) you get out your glass and crush some fresh mint leaves in it. Then you pour in some agave nectar (or honey if you're a barbarian) stir it around, filter out the crushed mint so all that remains is the now-minty syrupy goo, pour in your tea, stir it up, add a few cubes of ice, garnish with another sprig of mint, and have a mouthgasm. It's nice and sweet just like DFK likes it, but it won't give you the die-a-bed-es.