def mul_alpha(self):

        c = self._c
        a = c[3]
        c[0] *= a
        c[1] *= a
        c[2] *= a
Multiplies the color by its alpha component.
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/gameobjects/color.py/ColorRGBA.mul_alpha