[vtkusers] Modidy the color of a polydata point

[B. C.]

Hi everyone,
Can some one tell me how to modify the color of a particular point of a polydata?
I want to have as a final result my polydata points with 2 colors: when a point have some value, it will be 'red' else it will be 'blue'.
I need your help, thank you


      
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