This is a very pretty video, but it's also frustratingly sketchy on the details that I'm interested in; which smells did they use, and how did they match aroma to colour?
I once worked alongside a chap who had colour-word synaesthesia. He was an art student, and he described a project where he made a kind of slide viewer that showed the names of the days of the week in the colours that he saw them in, so that non-synaesthetes might better understand his experience.
I'm particularly interested in this project because many of my tasting notes characterise wine using colour words. Imagine if I had access to swatches of colour smells - how much easier it might be to describe flavour.