code: function(from, to, delta){
  		var computed = [];
  		(Math.min(from.length, to.length)).times(function(i){
  			computed.push({value: from[i].parser.compute(from[i].value, to[i].value, delta), parser: from[i].parser});
  		});
  		computed.$family = Function.from('fx:css:value');
  		return computed;
  	}
docs: computes by a from and to prepared objects, using their parsers.