I'm pretty sure the fake "pink lemonade" is made from lemons and food coloring.
But I just found two recipes online that use grenadine... and if you wanted to make it a little more natural (and possibly healthier), grenadine is made from pomegranate juice, so that's another one to try.
Although I have to say, cherry lemonade sounds awesome, even if it tastes nothing like traditional pink lemonade.
Edit: oh, oops, here's one of the recipes I was talking about
:
http://www.soulfoodandsoutherncookin...-lemonade.html