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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def refinements(self):
 """Details for the visualization."""

        self.rc("setattr a color gray @CENTROID")
        self.rc("setattr a radius 0.3 @CENTROID")
        self.rc("represent sphere @CENTROID")
        self.rc("setattr a color orange @CHARGE")
        self.rc("setattr a radius 0.4 @CHARGE")
        self.rc("represent sphere @CHARGE")
        self.rc("display :pseudoatoms")