docs: 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()