submission by Wizard1011 for arrays and for loops (View the other submissions)
function setup(){
  var myCanvas = createCanvas(windowWidth,windowHeight); //you must keep this line 

x = []  
 y = []
  for(var w=0;w < 500 ;w +=1){
   x.push(random(400))
    y.push(random(800))
  }


}

function draw() {
 background(120,110,0)
 for(var ii=0;ii<x.length;ii++){
   fill(x[ii])
   ellipse(x[ii],y[ii],x[ii]- 300,x[ii] - 300)
    
  }
}