Water balloons, pichkaris of colors, and gulal are how people celebrate Holi, the vibrant festival of colors. Revelers immerse themselves in mazza and masti (fun). Some food for thought: If a person uses one bucket of water (minimum), that is 15 liters of water. If five lakh people play Holi in one city, there is wastage of 75 lakh liters in a day.