New kind of postprod color

Hi all

I am a new user of salome and I wonder if I can use my own set of color for displaying the result.

To be more precise I want to recombine several scalar field in one using the HSV color system. For exemple I can provide to salome one scalare field for H value, one other for S value and the last one for V. And a want my solid to be colored like wih that.

It is possible and where should I look for programming this kind of function

Thanks

Fred