code: def read_value(self):
          
          while not self._valid():
              time.sleep((self._integration_time + 0.9)/1000.0)
          # Read each color register.
          r = self._readU16LE(TCS34725_RDATAL)
          g = self._readU16LE(TCS34725_GDATAL)
          b = self._readU16LE(TCS34725_BDATAL)
          c = self._readU16LE(TCS34725_CDATAL)
          # Delay for the integration time to allow for next reading immediately.
  
          red   = int(pow((int((r/c) * 256) / 255), 2.5) * 255)
          green = int(pow((int((g/c) * 256) / 255), 2.5) * 255)
          blue  = int(pow((int((b/c) * 256) / 255), 2.5) * 255)
  
          return [r, g, b]
docs: Reads the raw red, green, blue and clear channel values. Will return
          a 4-tuple with the red, green, blue, clear color values (unsigned 16-bit
          numbers).