[Gmsh] how / vector arrow fixed size, just color should be different

[Vladimir Nikolic]

dear sirs,
i would like to know is there any setting that could be set so that all wonderful gmsh prints to screen vectors similar to this:
VP(1.07,-0.130668,0.0221071){-0.477103, 0, 0};

as arrows of the same size. i would like to view all the arrows of the same size and different colors.
?
thanks
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