y=0;

​

function setup() {

  createCanvas(400, 400);

   background(220);

}

​

function draw() {

 fill(x);

  ellipse(mouseX, mouseY, 100, 100);

  if (mouseIsPressed) {

    ellipse(mouseX, mouseY, 50, 50);

  } else {

   ellipse(mouseX, mouseY, 250, 250);

  }

}