ember-data ok

application.adapter.js

import Ember from 'ember';

export default DS.ActiveModelAdapter.extend({
  host: 'https://output.jsbin.com',
  namespace: 'zufarix',
  
  buildURL: function (modelName, id, snapshot, requestType, query) {
    var url = this._super(modelName, id, snapshot, requestType, query);
    url = url.replace('colors/', '') + '.json';
    return url;
  }
});

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.serializer.js

import Ember from 'ember';

export default DS.ActiveModelSerializer.extend();

application.serializerrrrr.js

import Ember from 'ember';

export default DS.ActiveModelSerializer.extend();

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    // blue
    // return this.store.findRecord('color', 2);
    
    // red
    return this.store.findRecord('color', 5);

    // red, root node is "color_red"
    // return this.store.findRecord('color', 6);
  }
});

index.template.hbs

{{model.id}}: {{model.name}}

models.color-red.js

import DS from 'ember-data';
import Color from './color';

export default Color.extend({
  name: 'red'
});

models.color.js

import DS from 'ember-data';

export default DS.Model.extend({
  name: 'a color'
});

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "1.13.10",
    "ember-data": "1.13.14",
    "ember-template-compiler": "1.13.10"
  }
}