code: def paint_invalid_cell(self, row, col, color='MEDIUM VIOLET RED',
                             skip_cell=False):
          
          self.SetColLabelRenderer(col, MyColLabelRenderer('#1101e0'))
          # SetCellRenderer doesn't work with table-based grid (HugeGrid class)
          if not skip_cell:
              self.SetCellRenderer(row, col, MyCustomRenderer(color))
docs: Take row, column, and turn it color