Yes cold indeed although I'm not feeling the cold as much as I did the last time I did the diet.
Just think of the extra calories you're body is burning trying to keep you warm. Avoid wearing any additional clothing and shiver for a while, even more calories burned!!! lol (only kidding about the shivering).
I find hot drinks really help to warm me up, especially if I hold the cup in my hands. Also thick warm socks and hot water bottles while watching TV is a great comfort and keeps you toasty warm.