//  changeColorOnClickDown.js

(function(){ 
   var clicked = false;
   this.clickDownOnEntity = function(entityID, mouseEvent) { 
       if (clicked){
           Entities.editEntity(entityID, { color: { red: Math.random(255),
                                                     green: Math.floor((Math.random() * 255) + 1),
                                                     blue: Math.floor((Math.random() * 255) + 1)} });
           clicked = false;
       }else{
           Entities.editEntity(entityID, { color: { red: 255, green: 255, blue: 0} });
           clicked = true;    
       }
   };