Christmas lights are a form of decoration that add light and brightness to the dark days of winter. During the holiday season, colorful lights can be found adorning homes, shops and streets. These lights come in all shapes and sizes, and create unique displays. They may be Christmas trees dripping with tiny white lights, snowflakes in blue and white running down the side of a building, or a string of glowing stars on a window frame. Christmas lights can be used indoors or outdoors to create a festive atmosphere. Many lights come on timers, while others have multiple settings for intensity of light and speed of blink. Christmas lights are a wonderful way to bring color and light to a dark winter season. It's a tradition that many people enjoy, and it can help create a cheerful atmosphere throughout the holidays.