RE: articulating headlights. Yes, I have them. And I live in a rural area with dark curvy roads. I do notice them move, but quite honestly, at this point I don't know that I would insist on having them again. They may make a small difference, but I don't think anything earth-shattering. I do notice that the Hid headlights are much brighter though. That is a nice improvement.
The blue gold metallic is a tricky color to explain. In some lights it looks blue, in others, it does indeed look pewter. It also depends on the angle you look at the car. As well as the distance you are from the car (father away -- it seems to look more grey). I would say if you really want a noticably blue car, I would doubt this is the color for you. I like it though. It doesn't show dust much -- which is good (again because we live in a rural area). I have always loved black cars -- but it is just too dusty here to have one. I'd be washing it every day, and I do not have the time!
I have seen the Enclave in real life in the red and in the opal white (I think it is called -- it's a slightly off white). I thought the red was VERY sharp. I would say that it would have been a second choice for me.
I do really like the ebony interior with the blue gold. Originally I was leaning toward the grey (I forget the name color). But I think the contrast of the blue gold with the dark interior is very sharp. The wood tones on the dash, I believe, also really look rich with the ebony interior. Down side to the ebony -- shows dust/dirt quickly.
Just filled up the tank for the first time. Averaged 17 mpg. -- but that's a lot of "playing" with the new car, so I am thinking that it might improve slightly.
Hoping this helps all of you who are looking. I am still enjoying it and will celebrate one week with in on Thursday.