int r=4;
int g=5;
int b=6;

void setup() {
  // put your setup code here, to run once:
  pinMode(r, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(b, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int value= analogRead(A1);
  digitalWrite(r, HIGH);
  delay(value);
  digitalWrite(r, LOW);
  digitalWrite(g, HIGH);
  delay(value);
  digitalWrite(g, LOW);
  digitalWrite(b, HIGH);
  delay(value);
  digitalWrite(b, LOW);
}