Seeing red Colour modulation and photosensitive epilepsy

what about colours? A few weeks back I was at a wedding reception. The hall got suddenly dark, and a coloured strobe light started illuminating the dance floor. I watched guests getting up on their feet to dance with the newlywed couple. Bless them. But I started feeling stressed and uneasy in my head (not least because I did not join in – largely due to my lack of dancing faculty). But the reason, I eventually realised, was the flickering colourful light. I quickly left the hall.