Aw, they're adorable! I love kittens; they're so sweet and fun to have. I have three at the moment. One I just got for my birthday, and her name is Keiko, (she resembles your black one a lot) and my other two are called Misty and Peaches. I know--Wierd names for cats, but they all have their own stories to them, lol. ^_^;
Anyway, I'm glad you have them now! Enjoy them while they're small and cute like that! (They're still cute when they're older, but the babies are just the most adorable things in the world!)