Festive lights have a starring role on most Christmas trees ... Sunlight is the biggest source of blue light — it can also be found in LED TVs, computer monitors and smartphones.

The best Christmas tree lights make a ... while the competition has more contrast between the light and dark ends of each fixture. Beyond the red-blue-yellow-green-orange combo I tried, there ...

Shopping for the best outdoor Christmas ... light strands for maximum coverage. Plus, the LED bulbs have a long lifespan, and if a few go out, they won’t cause a whole section of lights to go dark.

to find an LED substitute. Our best overall pick from Brizled combines both warm white and multicolor LEDs for the best lighting variety. Some Christmas lights include extras that give you more ...