Indexing keyword list in alphabetical order VS not sorting at all in elasticsearch

I'm using elasticsearch to store lists of keywords with the standard analyzer, like this:

{
   id:1,
   body_color:'silver,blue',
   feature:'wifi,gps'  
},
{
   id:2,
   body_color:'blue,red',
   window_color:'yellow,white',
   feature:'multi core,wifi'
}

Does sorting these lists in alphabetical order, e.g)

{
   id:1,
   body_color:'blue,silver',
   feature:'gps,wifi'  
},
{
   id:2,
   body_color:'blue,red',
   window_color:'white,yellow',
   feature:'multi core,wifi'
}

require a smaller index size because of the more standard and less variations? Does it help for normalizing the tokens?

It doesn't help because the underlying structures don't care about ordering. Sparsity is usually the bigger concern.