The Poser 5 Material Room - Color Ramps

You can find the Color Ramp option under the Math node, it's 6^th on the list...

...and at first sight this little piece of the materials room doesn't seem to have any obvious use.

You have 4 colours, and they all seem to add up to, errr, ONE colour.
The magic begins when you add one of these...
Yup, a pretty tiled pattern.

Add the two together, and you get this...

And when you render it up you get...this

and if you swap maps, and colours you can do all sorts of things...

I think you'll agree, color ramps are well worth investigating.