let y = 200;

let xspeed = 1;

let ballColor;

let ballSize = 10;

​

function setup() {

  createCanvas(400, 400);

  // Start color: White

  ballColor = color(255);

}

​

function draw() {

  background(0);

​

  //  ball color change

  fill(ballColor);

​

  // Ball

  circle(x, y, ballSize);

​

  // Ball movement

  x = x + xspeed;

​

  // Ball bounces off the right side

  if (x > width) {

    xspeed = -random(1, 5); // Random speed on bounce

    ballColor = color(random(255), random(255), random(255));

    // Change color

    ballSize = random(10, 30);

    // Change size

  }

​

  // Ball bounces off the left side

  if (x < 0) {

    xspeed = random(1, 5); // Random speed on bounce

    ballColor = color(random(255), random(255), random(255)); // Change color

    ballSize = random(10, 30); // Change size

  }

}

​