old_contents: """RGBA Color."""
  from typing import Tuple, Union, List
  
  from mpf.core.rgb_color import RGBColor
  
  
  class RGBAColor(RGBColor):
  
      """RGB Color with alpha channel."""
  
      def __init__(self, color: Union[RGBColor, str, List[int], Tuple[int, int, int], Tuple[int, int, int, int],
                                      List[int]]) -> None:
          """Initialise RGBA color."""
          if isinstance(color, (tuple, list)) and len(color) == 4:
              self.opacity = color[3]
              super().__init__((color[0], color[1], color[2]))
          else:
              self.opacity = 255
              super().__init__(color)     # type: ignore
  
      def __iter__(self):
          """Return iterator."""
          return iter([self._color[0], self._color[1], self._color[2], self.opacity])
  
      def __str__(self):
          """Return string representation."""
          return "{} Opacity: {}".format(self._color, self.opacity)
  
      @property
      def rgba(self) -> Tuple[int, int, int, int]:
          """Return an RGB representation of the color."""
          return self._color[0], self._color[1], self._color[2], self.opacity
  
      @rgba.setter
      def rgba(self, value: Tuple[int, int, int, int]):
          self._color = value[0:3]
          self.opacity = value[3]
  
new_contents: """RGBA Color."""
  from typing import Tuple, Union, List
  
  from mpf.core.rgb_color import RGBColor
  
  
  class RGBAColor(RGBColor):
  
      """RGB Color with alpha channel."""
  
      def __init__(self, color: Union[RGBColor, str, Tuple[int, int, int], Tuple[int, int, int, int], List[int]]) -> None:
          """Initialise RGBA color."""
          if isinstance(color, (tuple, list)) and len(color) == 4:
              self.opacity = color[3]
              super().__init__((color[0], color[1], color[2]))
          else:
              self.opacity = 255
              super().__init__(color)     # type: ignore
  
      def __iter__(self):
          """Return iterator."""
          return iter([self._color[0], self._color[1], self._color[2], self.opacity])
  
      def __str__(self):
          """Return string representation."""
          return "{} Opacity: {}".format(self._color, self.opacity)
  
      @property
      def rgba(self) -> Tuple[int, int, int, int]:
          """Return an RGB representation of the color."""
          return self._color[0], self._color[1], self._color[2], self.opacity
  
      @rgba.setter
      def rgba(self, value: Tuple[int, int, int, int]):
          self._color = value[0:3]
          self.opacity = value[3]
  
subject: remove duplicate annotation