The Brightness

function setup() {

  createCanvas(500, 690);

  background(0,0,40);

  noStroke();

  rectMode(CENTER);

  for(let i = 0; i<150; i++){

    noStroke()

    let x = random(width);

    let y = random(height/3.0);

    let diameter = random((height-y)/80);

    fill(255, 255, random(255), random(100,255));

    ellipse(x, y, diameter, diameter);

  }

  for(let i = 0; i<45; i++){

    noStroke()

    let x = random(width);

    let y = random(height/1) + height/1.6;

    fill(random(200,255), random(200,255), random(200,255), 100);

    rect(x,y,random(50,100), random(130,230));

  }

   for(let i = 0; i<200; i++){

    noStroke()

    let x = random(width);

    let y = random(height/1.5)+height/2.7;

    let diameter = random(y/10,0)

    fill(random(180,255), random(255), random(50), random(150));

    ellipse(x, y, diameter, diameter)

  }

  fill(255,255,230,120);

  let x = width/6;

  let y = height/6;

  let diameter = 70;

  for(let i = 0; i<100; i++){

    ellipse(x, y, diameter, diameter);

    diameter = diameter / 1.3;

    }

}

​