I actually really love kale-  have you ever had it?
I love it! It's so good for you.  I like both the green and purple varieties. 
I've never seen purple kale - is it the same?
Yes, both the green and purple kinds have similar leaves. 
Is the purple as nutritious as the green?
I am not entirely sure about that. I just like the look and taste. It's like cabbage, which also comes in green and purple. Kale is actually a cultivar of cabbage.