[Paraview] Changing values of property panel

[Utkarsh Ayachit]

As a side note, for changing coloring on representations, I'd suggest
using vtkSMPVRepresentationProxy::SetScalarColoring() [1] instead of
changing "ColorArrayName" directly. That takes care of setting up
lookup table etc. as ParaView would.




[1] http://www.paraview.org/ParaView3/Doc/Nightly/www/cxx-doc/classvtkSMPVRepresentationProxy.html#acb45bfbb4940b0a6a30852aaff0a8b35