Imitating the kuffaar

There was a fun run race this past month that is called colour run. Basically the people run a fun run where along the way colour powder gets thrown at the runners. This is a global event which is now becoming prevalent in the Muslim community. The purpose as per their website is celebrating healthiness, happiness and individuality. I would like if Mufti can maybe give a general view on the harms of doing such races and also expanding on the nature of which this is similar to a Hindu custom (Holi)?