Quite old but provocative. If you really think you understand how we see colour you might want to skip watching this because it did stand everything I thought I knew on its head.
Gotta love Horizon, and of course its still going today.
I found that very interesting and some of the old equipment they used was great to see too. I grew up on a diet of Horizon programmes. Oh and they spelt 'colour' the right way too :)