After nearly 2 years of searching, I have found someone who has posted up the fantastic BBC Horizon programme: Do You See What I See? which was all about colour perception and shown in August 2011.
It is not available on iPlayer 0r on video, so I am chuffed to bits to find these and will be rewatching them again as they have proved to be inspirational and the programme has been pivotal to my recent work.
Horizon Do You See What I See Part 1-4 by plamenj
Horizon Do You See What I See Part 2-4 by plamenj
Horizon Do You See What I See Part 3-4 by plamenj