// execute this script in the github's page console
let colors = ['#196127', '#239a3b', '#7bc96f', '#c6e48b'];
function getRandomColor() {
  let index = Math.floor(Math.random() * colors.length);
  return colors[index];
}

document.addEventListener('contextmenu', e => {
  e.preventDefault();
  e.target.setAttribute('fill', getRandomColor())
})

function clear() {
  let elements = Array.from(document.querySelectorAll('rect.day'));
  elements.forEach(el => el.setAttribute('fill', '#ebedf0'));
}