Its all about Holi Festival

Holi is an ancient Hindu religious festival which has become popular with non-Hindus in many parts of South Asia, as well as people of other communities outside Asia.[9] It is celebrated at the approach of the spring equinox,[9] on the Phalguna Purnima (Full Moon). The festival date, which is determined by the Hindu calendar, varies from year to year on the Gregorian calendar, typically coming in March, sometimes in February. It is primarily observed in India, Nepal, and their diaspora in other regions of the world. In recent years the festival has spread to parts of Europe and North America as a spring celebration of love, frolic, and colours