code: def refinements(self):
          
          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")
docs: Details for the visualization.