purple leaves (PICS)

[Faddenator]

First look I'd say just from the temps getting low during the night....That frigid air....

I completely agree... Most strains will turn purple if the temps are low in the night cycle during flowering. It's a defense mechanism of the plant to protect from the cold. I hear anywhere below 70 degrees F will make it happen.

However, People will love the way your bud looks... it's a common misconception that purple = amazing.