code: def _attr_to_method(self, attr):
          
  
          if attr in codes['fore']:
              # Fore method
              return partial(self.chained, fore=attr)
          elif attr in codes['style']:
              # Style method
              return partial(self.chained, style=attr)
          elif attr.startswith('bg'):
              # Back method
              name = attr[2:].lstrip('_')
              if name in codes['back']:
                  return partial(self.chained, back=name)
          elif attr.startswith(('b256_', 'b_')):
              # Back 256 method
              # Remove the b256_ portion.
              name = attr.partition('_')[2]
              return self._ext_attr_to_partial(name, 'back')
          elif attr.startswith(('f256_', 'f_')):
              # Fore 256 method
              name = attr.partition('_')[2]
              return self._ext_attr_to_partial(name, 'fore')
  
          return None
docs: Return the correct color function by method name.
              Uses `partial` to build kwargs on the `chained` func.
              On failure/unknown name, returns None.