createCanvas(400, 400);

​

  strokeWeight(32);

  strokeCap(SQUARE);

  noFill();

  noLoop();

}

​

function draw() {

  background(32);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 64, 64, 0, PI);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 64, 64, PI, 0);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 160, 160, PI / 6, PI * 5 / 6);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 160, 160, PI * 5 / 6, PI * 3 / 2);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 160, 160, PI * 3 / 2, PI / 6);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 256, 256, 0, PI / 2);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 256, 256, PI / 2, PI);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 256, 256, PI, PI * 3 / 2);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 256, 256, PI * 3 / 2, 0);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 352, 352, PI * 3 / 10, PI * 7 / 10);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 352, 352, PI * 7 / 10, PI * 11 / 10);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 352, 352, PI * 11 / 10, PI * 3 / 2);

  stroke(random(255), random(255), random(255));

  arc(200, 200, 352, 352, PI * 3 / 2, PI * 19 / 10)

  stroke(random(255), random(255), random(255));

  arc(200, 200, 352, 352, PI * 19 / 10, PI * 3 / 10)

}