Light is utilized as a theme during the Festival of Lights in various cities by incorporating artistic light installations and projections that illuminate public spaces. This theme promotes creativity, transforming urban environments into vibrant, visually appealing displays. Artists often use light to evoke emotions and convey social messages, while the festival serves as an invitation for community engagement. The overall experience, combining art and technology, creates a festive atmosphere that encourages visitors to appreciate their surroundings and connect with others through shared visual experiences.