The Christmas tree at Rockefeller Center in New York City will glow with tens of thousands of bulbs when lit this week.

Many people have no idea what the red bulb is for on their Christmas lights and often assume it's a spare or replacement.

Whether you're in the market for replacement light bulbs or looking to add some decorative lighting for the holiday season, there's a lot to consider when picking out a new LED bulb. You could opt ...