setColor(string, (integer, integer, integer, integer))
        sets color for vehicle with the given ID.
        i.e. (255,0,0,0) for the color red.
        The fourth integer (alpha) is only used when drawing vehicles with raster images

def setColor(self, vehID, color):
        """setColor(string, (integer, integer, integer, integer))
        sets color for vehicle with the given ID.
        i.e. (255,0,0,0) for the color red.
        The fourth integer (alpha) is only used when drawing vehicles with raster images
        """
        self._connection._beginMessage(
            tc.CMD_SET_VEHICLE_VARIABLE, tc.VAR_COLOR, vehID, 1 + 1 + 1 + 1 + 1)
        self._connection._string += struct.pack("!BBBBB", tc.TYPE_COLOR, int(
            color[0]), int(color[1]), int(color[2]), int(color[3]))
        self._connection._sendExact()