const int RED   = 5;
const int GREEN = 6;
const int BLUE  = 7;

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

void loop() {
  // put your main code here, to run repeatedly:
  analogWrite(RED,   random(000000, 16777215));
  analogWrite(GREEN, random(000000, 16777215));
  analogWrite(BLUE,  random(000000, 16777215));
  delay(2);
}