The concept of photographing Christmas lights late at night never seems to produce the best results. Instead, head out just as the sun sets and use the twilight sky as your background. Shoot your wide angle photos with the sky until you lose your color in the background. Those twilight skies will give you a beautiful blue with the Christmas lights. This old trick comes from news photographers who shoot a number of Christmas decorations but really need that blue background to set off the colorful lights. Remember that lights look better on the image if they are overexposed. The overexposure give them a glowing appearance.