Ember data Embedded JSON without Id and no root object

I am working with Ember and Ember-data. But the JSON which i receive is not par with the Ember side-loading standards. The JSON does'nt have a root model. Also the models are embedded and some times haves Ids and sometimes does not have Id.

I have seen couple of links on how to add root model using extract hook and also how to play with embedded model using

App.ColorSerializer = DS.RestSerializer.extend(DS.EmbeddedRecordsMixin, {
  attrs: {
    foos: {embedded: 'always'}
  }
});

This code is taken from this link.

This is the JSON used there

{
 colors:[
  {
    id: 1,
    color: "red",
    foos:[
      {
        id:1,
        name:'something 1'
      },
      {
        id:2,
        name:'something 2'
      }
    ]
  },
 ...

Now the problem that i am facing is that my JSON could also look like below(no root model "color")

{
    id: 1,
    color: "red",
    foos:[
      {
        id:1,
        name:'something 1'
      },
      {
        id:2,
        name:'something 2'
     }
  ]
},
...

or even like this(without Ids for foo objects)

{
    id: 1,
    color: "red",
    foos:[
      {
        name:'something 1'
      },
      {
        name:'something 2'
     }
  ]
},
...

Is there any way i can handle this? How do i add Ids to the embedded model foo? Also is there some solution/plugin which would accept any kind of embedded JSON and convert it into side loaded JSON and added Ids if needed.

I have seen this solution. Does it really work? Because it does not use the latest EmbeddedRecordsMixin