highly doubtful that CO would put 9 abreast seating in the 787. Why? Because they don't have 10 (TEN) abreast seating on their 772ERs either. EK runs their 773s in that config, and on a similar note, Air Transat runs their 330s with 9 abreast seat config. These extra narrow seat configs just aren't that widespread, and I doubt CO would do this.

OTOH, AI can do this, since most Indians are skinnier than Texans