Edit in JSFiddle

$("#picker").spectrum({
  color: "#f00"//,
  /*move: function(evt, tinycolor) {
		console.log(['move()', tinycolor]);
  },
  show: function(evt, tinycolor) {
		console.log(['show()', tinycolor]);
  },
  hide: function(evt, tinycolor) {
		console.log(['hide()', tinycolor]);
  },
  beforeShow: function(evt, tinycolor) {
		console.log(['console()', tinycolor]);
	},*/
});
var throttled = _.throttle(test, 125);
function test(evt, tinycolor) {
		console.log(['move()', evt, tinycolor]);
}

$("#picker").on('move.spectrum', function(evt, tinycolor) {
		throttled(evt, tinycolor)
});
$("#picker").on('show.spectrum', function(evt, tinycolor) {
		console.log(['show()', evt, tinycolor]);
});
$("#picker").on('hide.spectrum', function(evt, tinycolor) {
		console.log(['hide()', evt, tinycolor]);
});
$("#picker").on('beforeShow.spectrum', function(evt, tinycolor) {
		console.log(['beforeShow()', evt, tinycolor]);
});

<input type='text' id="picker" />