Mood: The mood of the video appears to be celebratory and festive, likely marking the beginning of a new year. The use of fireworks and bright colors evokes feelings of excitement, joy, and optimism. The theme seems to be related to New Year's celebrations, possibly a countdown or a welcome message to the year 2020.

Environment: The setting appears to be a nighttime scene, likely a cityscape or a party setting, given the presence of fireworks. The background is a gradient of dark blue to purple, with a bokeh effect adding to the festive ambiance. The overall environment seems lively and vibrant, perfect for a celebratory event.