Hue and Saturation

[TTYO]

Hi after watching a Gnomon DVD

click on the link

I learnt that

Lighter Value meant
Less Saturated
change in Hue

Darker Value meant
More Saturated
Change in Hue

Then I load up a scene in Max but then I see it’s really just a change in value not in saturation and hue.

Does that mean I have to use 3 maps with differing Saturation and Hue? Then use a gradient falloff that reacts with light?

And Maya does not have a Falloff or Gradient map like in Max