// Define Pins
#define RED 3
#define GREEN 5
#define BLUE 6

// define variables
byte redValue;
byte greenValue;
byte blueValue;

void setup()
{
pinMode(RED, OUTPUT);
pinMode(GREEN, OUTPUT);
pinMode(BLUE, OUTPUT);

}


// main loop
void loop()
{
  redValue = 255; // choose a value between 1 and 255 to change the color.
  greenValue = 0;
  blueValue = 0;

  analogWrite(RED, 0);
  delay(1000);

   for(int i = 0; i < 255; i += 1) // fades out red bring green full when i=255
  {
    redValue -= 1;
    greenValue += 1;
    analogWrite(RED, 255 - redValue);
    analogWrite(GREEN, 255 - greenValue);
    delay(10);
  }

  redValue = 0;
  greenValue = 255;
  blueValue = 0;

  for(int i = 0; i < 255; i += 1)  // fades out green bring blue full when i=255
  {
    greenValue -= 1;
    blueValue += 1;
    analogWrite(GREEN, 255 - greenValue);
    analogWrite(BLUE, 255 - blueValue);
    delay(10);
  }

  redValue = 0;
  greenValue = 0;
  blueValue = 255;


  for(int i = 0; i < 255; i += 1)  // fades out blue bring red full when i=255
  {
  redValue += 1;
  blueValue -= 1;
  analogWrite(RED, 255 - redValue);
  analogWrite(BLUE, 255 - blueValue);
  delay(10);
  }
}