createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  let currentHour = hour();

​

  if (currentHour > 12) {

    // this changes hours from [13,23] to [11,1]

    currentHour = 24 - currentHour;

  }

​

  let gVal = (currentHour / 12) * 200;

  let bVal = (currentHour / 12) * 255;

  let bgndColor = color(0, gVal, bVal);

​

  background(bgndColor);

}

​