RGBA color class using property decorators

color.py

class Color:
    ''' RGBA color handler '''

    def __init__(self, hexcode='000000', alpha='00'):
        self.hexcode = hexcode
        self.alpha = alpha

    @property
    def hexcode(self):
        return ('{:02x}' * 3).format(int(self.r), int(self.g), int(self.b))

    @hexcode.setter
    def hexcode(self, hexcode):
        self.r = int(hexcode[0:2], base=16)
        self.g = int(hexcode[2:4], base=16)
        self.b = int(hexcode[4:6], base=16)

    @property
    def r(self):
        return self._r

    @r.setter
    def r(self, value):
        self._r = Color._convert_value(value)

    @property
    def g(self):
        return self._g

    @g.setter
    def g(self, value):
        self._g = Color._convert_value(value)

    @property
    def b(self):
        return self._b

    @b.setter
    def b(self, value):
        self._b = Color._convert_value(value)

    @property
    def alpha(self):
        return self._alpha

    @alpha.setter
    def alpha(self, value):
        self._alpha = Color._convert_value(value)

    def __str__(self):
        if not self.alpha:
            return '{}'.format(self.hexcode).upper()
        else:
            return '{}{:02x}'.format(self.hexcode, self.alpha).upper()

    def __repr__(self):
        return 'Color({}, alpha={:02x})'.format(self.hexcode.upper(), self.alpha)

    @staticmethod
    def _convert_value(value):
        if type(value) is str:
            value = int(value, base=16)
        if value > 255:
            raise ValueError('Value must be between 0-255')
        return value