And I love these birds nest ones as well :)
I really struggled to get these photos. If I used flash then the colours (even adjusting the white balance) looked terrible but if I didn't use flash they were blurred. I didn't know how to get round that although I've since found something that explains how to photograph Christmas trees and lights. Check out the links below.
Strobist - how to photograph Christmas lights
How to photography Christmas lights and other holiday events