Colour Theory and Target Marketing?

I took an intensive colour theory class in my first year of Ryerson Fashion. One of the more interesting classes was a project where the student had free reign over a colour-aid collage. Use any paper colour combo you want and post it on the board. One would have expected a pretty impressive variety given the strong individual personalities in design. Turns out, not so much. The end result of the project was not only a pattern in the colours that where chosen by the students but that individuals tend to gravitate to colours that fall into their personal colour pallets (spring, summer, fall and winter). So if you are a spring, you are naturally attracted to spring-like colours. Explains my attachment to lime green. What is the point of post? I wondering if the fashion industry and even advertising agencies use this knowledge and match it up with some basic demographics. Skin, hair, and eye colour determine what pallet you’ll be. If one can look for pockets of people with similar physical distinctions I wonder if you can create lines of products that have a more colorful appeal.  Just a thought…