void rgbled(const byte Blue, const byte Red, const byte Green, const byte SEC = 1)
{
  analogWrite(9, 255 - Red);
  analogWrite(10, 255 - Green);
  analogWrite(11, 255 - Blue);
  delay(SEC * 1000);
}

void setup()
{  
  for (unsigned int i = 9; i <= 11; i++)
    pinMode(i, OUTPUT);
}


void loop()
{  
  rgbled(200, 50, 100, 2);
}