av01d

const ColorSteps = (() => {

  /**
   * Convert any color string to an [r,g,b,a] array.
   * @author Arjan Haverkamp (arjan-at-avoid-dot-org)
   * @param {string} color Any color. F.e.: 'red', '#f0f', '#ff00ff', 'rgb(x,y,x)', 'rgba(r,g,b,a)', 'hsl(180, 50%, 50%)'
   * @returns {array} [r,g,b,a] array. Caution: returns [0,0,0,0] for invalid color.
   * @see https://gist.github.com/av01d/8f068dd43447b475dec4aad0a6107288
   */
  const colorValues = color => {

av01d

 const commands = {
	'ctrl+z' => History.undo,
	'ctrl+y' => History.redo,
	'escape': () => { alert('esc'); }
};

$(window).on('keydown', event => {
	let label = '';
	if (event.ctrlKey) { label += 'ctrl+'; }
	if (event.altKey) { label += 'alt+'; }