Hap - Sorry it's taken me a while to get back on this. Here are some basics on the drinks I had mentioned earlier.
You can use any type of green tea you like - loose and Japanese is the best (more fresh and smells like grass rather than black tea) but a standard grocery store green tea in tea bag form will work just as well and be just as tasty. The key with green tea is that you steep it for a shorter period of time. Don't steep for too long or it will be bitter. So, boil water. Take the water off the stove, use 1 tea bag for every 4 cups of water (approximately). Steep for 1-2 minutes. It will differ by the type of tea (most packages will tell you how long is ideal). Shoot for a nice lighter green color versus a dark, hazy color. This is my preference - make as per your taste.
Chill the tea. Mix the juices in the day you want to drink it. I make the mixes in smaller bottles and carry them to work.
Spritzer options -- add sparkling water to taste to both of these:
3/5 green tea 2/5 orange juice
3/5 green tea 1/5 orange juice 1/5 pomegranate juice
Alternatively, you can just leave out the tea and just do the following:
1/2 orange juice 1/4 pomegranate juice and 1/4 sparkling water
With either of the above, the orange juice is essential because it cuts the pomegranate juice which has a very strong flavor. Use whichever brand you like to drink with no pulp. OJ is very high in sugar even if it is natural sugar so use smaller amounts of it. I use it as a natural sweetener but don't use it to make the majority of the drink.