nightlight with non primary colors

/*
 * Manvi Mittal
 * Photoresistor Project
 */

const int pinPhoto = A0;
const int pinLedRed = 9; // red
const int pinLedGreen = 10; // green
const int pinLedBlue = 11; // blue
int lightLevel = 0;
int brightness = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode (pinPhoto, INPUT);
  pinMode (pinLedRed, OUTPUT);
  pinMode (pinLedGreen, OUTPUT);
  pinMode (pinLedBlue, OUTPUT);
  Serial.begin (9600);

  analogWrite (pinLedRed, 100);
  delay (500);
  analogWrite (pinLedRed, 0);
  delay (500);

  analogWrite (pinLedGreen, 100);
  delay (500);
  analogWrite (pinLedGreen, 0);
  delay (500);

  analogWrite (pinLedBlue, 100);
  delay (500);
  analogWrite (pinLedBlue, 0);
  delay (500);


}

void loop() {

  // put your main code here, to run repeatedly:
  lightLevel = analogRead (pinPhoto);
  brightness = map(lightLevel, 1, 150, 255, 0);
  //NEW FUNCTION: map -- map (variable, minimum of variable, maximum of variable, corresponding value to minimum of variable, corresponding valuable to maximum of variable)
  brightness = constrain (brightness, 0, 255);
  // NEW FUNCTION: constrain -- constrain (variable, min, max) -- so that there are no negative numbers

  analogWrite (pinLedRed, brightness/2);
  analogWrite (pinLedBlue, brightness*3);
  analogWrite (pinLedGreen, brightness/20);

  Serial.print (" Light Level = ");
  Serial.print (lightLevel);
  Serial.print (" Brightness = ");
  Serial.println (brightness);
}