liquorice

@mixin animation($options...) {
  $random: random(9999);
  $animation_name: "animation_#{$random}";

  -webkit-animation: $animation_name $options;
  -moz-animation: $animation_name $options;
  -ms-animation: $animation_name $options;
  animation: $animation_name $options;

  @at-root {

liquorice

var light_or_dark = function(hex) {
  var rgb = /^([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex),
      luma = Math.sqrt(
        0.299 * parseInt(rgb[1], 16) +
        0.587 * parseInt(rgb[2], 16) +
        0.144 * parseInt(rgb[3], 16)
      );

  return (luma > 13) ? "light" : "dark";
};