tuxluvr! I saw that programme too, but of course I can't remember what they said exactly about a cats vision. Did you also see all the others from the series "The secret life of cats? Really interesting and informative!

Anyway, I think what Wayne says, sums it up:

I suppose that their eyes are not necessarily color sensitive but rather motion perceptive, because the wild nature of a cat only needs to detect motion, and not color to survive.

Niina! They can surely see the light moving, but not neccessarily what color it is.