var growx= 0;

var growy=0;

​

var r= 100

var g= 10

var circlex =0 

​

​

function setup() {

  createCanvas(800, 400);

   background(r,g,50);

}

​

function draw() {

   stroke(g,r,255);

  fill(255);

  ellipse(circlex, height/2, growx,growy);

  growx= growx+1;

  growy= growy+2;

  circlex= circlex+2;

  g= g +.7

}