Colors of Holi

When one of my hindu students came to study I asked him did you celebrate holi. His answer was no. I was surprised but he explained that the fun of holi was to celebrate it with family and his family was scattered in Karachi, Hyderabad and his village. He told me in childhood when he used to celebrate it his grand father always told him not to throw colours as they would spoil the floor. He explained that the colours available in Pakistan are hard to get rid off and even after a week they remained on skin and he had to cleanse the body with kerosine. I was surprised how come here the water colors are not available. He may be right...I don't know. Was he hiding something or scattered family and caustic colors were the causes of such a bland holi day in the life of a hindu guy.