int r = 5;
int g = 6;
int b = 7;
void setup() {
  Serial.begin(9600);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  int vr = analogRead(A0);
  Serial.println(vr);
  if(vr >= 0 && vr < 400) {
    analogWrite(r,64);
    analogWrite(g,95);
    analogWrite(b,237);
  }else if(vr >= 400 && vr < 800){
    analogWrite(r,00);
    analogWrite(g,255);
    analogWrite(b,00);
  }else if(vr >= 800 && vr <= 1023){
    analogWrite(r,255);
    analogWrite(g,165);
    analogWrite(b,00);
  }
  // put your main code here, to run repeatedly:

}