Well here's their official "under 200 calories" drink list..... (The carbs can be found if you check the nutritional info for each individual drink)
Caramel Frappuccino® Light Blended Beverage. 100
coffee Frappuccino® Blended Beverage 180
Teavana® Shaken Iced Passion Tango™ Tea 0
Shaken Tazo® Iced Black Tea Lemonade 100
Nonfat Iced Vanilla Latte 120
Nonfat Iced Caramel Macchiato 140
Iced Coffee (with classic syrup) 60
Iced Skinny Latte 70
Brewed Coffee 5
Brewed Tea 0
Nonfat Green Tea Latte 210
Nonfat Cappuccino 60
Nonfat Caffè Latte 100
Nonfat Caramel Macchiato 140
Soy Chai Tea Latte 180
Nonfat Caffè Mocha – hold the whip 170
Skinny Vanilla Latte 100
Steamed Apple juice 170
Caffè Americano 10
All suggestions based on a Tall serving (12 fl oz / 355 ml).