As I said, I haven't read this in a while, but if I remember correctly, a good portion of it takes place on LV-426. In which case, go blue. Even on LV-223, the basic color scheme in the Prometheus film was a cool grey with hints of a greenish yellow. The Aliens series just failed to capture the vibe of any of the films for me. Also, if I remember correctly, there were hardly any backgrounds drawn in. That's just lazy. But my memory may fail me. I await the hardcover to do a good reread.
I did like Prometheus the most. I think those comics captured the look and feel of the film the most and even though I would consider myself as someone with an advanced understanding of the franchise, I feel that the casual reader who saw the film would appreciate the look and feel of the Prometheus comics. The same can't be said for the Aliens comics. Now 30 years did pass by mind you but still, it just doesn't capture the vibe.