New Colors
Editorial Rating:
I have taken everyone's suggestions and tried to incorporate them here.
OK, there is a lot here, but I like many of them. Perhaps the brown and sky blue is not all that serious, but I do like it.
I have come to realize there are three things I am looking for here. First, to work with the bronze windows. Second, to match the feel of what will be a crisp, clean, modern interior. Third, I would like the perception of the house to change as people approach. For example, I think it would be kind of neat to have a white cube that from the street looks kind of pristine and maybe a bit sterile, but then as you walk up the driveway and get close to the house, the perception moves toward being more inviting. Alternatively, maybe the house could look very warm and cozy from the street, but then become more crisp and clean as visitors approach the house. This is not essential, but I think it would be a cool effect.
Any that jump out at you?
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color vote
I still really like the last one, but based on what you've described as your intent for the house overall, I vote for the third one. It's a visually appealing mix and it's a good combination of inviting and crisp.
I love how you talked about changing the perception of the house and from the street vs. closer viewing by visitors. I think the inset entry presents a good opportunity to do something with color or finsh that would be subtle or unnoticable from the street yet makes a statment to visitors, perhaps also inside the brick wall along the walk or the materials of the walk itself. Think texture, maybe. Also, are the windows flush with the exterior or inset? This might be a way to work in a visual suprise. Flush to the exterior gives you an inside sill/box that would be visible through the windows with up close views but not from the street and a nice opportunity to bring outside colors/materials inside or vice versa. If theres an outside sill you could do something with just the horizontal surface of the flashing. IMO, the exterior is going to be great no matter what...you've got a lot of great detail already.

Color Choices
At first glance the camel/powder blue (#2) looks best (to me) but when you visualize the colors on the house from the rendering, I don't know how the colors would materialize on the actual house. Perhaps if you could get the powder blue to be as pure and bright as it is on the photo, then I'd put my vote in for that color scheme. Those colors I think would work well with a stark white interior.
My second favorite is the last combination. I think it would look nice with your material choices. It also has a warm and cool colors and would look nice with the planned window frames.
Great presentation!