code: def validate(style, value, scalar=False):
      
      validator = get_validator(style)
      if validator is None:
          return None
      if isinstance(value, (np.ndarray, list)):
          if scalar:
              return False
          return all(validator(v) for v in value)
      return validator(value)
docs: Validates a style and associated value.
  
      Arguments
      ---------
      style: str
         The style to validate (e.g. 'color', 'size' or 'marker')
      value: 
         The style value to validate
      scalar: bool
  
  
      Returns
      -------
      valid: boolean or None
         If validation is supported returns boolean, otherwise None