I was confused about what you were asking but I think that I get it now? You want to define the space between the great room and dining room by adding a wall with a large cased opening? If so, that's really easy to add during the framing stage (although it's easy enough to do even after a house is finished.) With this floor plan, I think it is a really good idea. It will define the space and give you some wall space that will facilitate furniture arranging and areas for art work, etc. And still feel open-ish and give good flow. (As well as support for the ceiling structure above.) Minimal expense to frame (but the millwork to case can get pretty expensive.)

Lori Reeb , your flooring guy should be able to sand the floors in a small area and show you several different stain colors on the floor. That will go a long way in helping you choose. Online pictures can be tricky for a number of reasons.

Mobile App At the Dunn Edwards site" Point your hand-held device at any scene, take a photo and see your inspiration matched to colors from Dunn-Edwards Perfect Palette® color system, including the 300 new colors of our Then, Now & Forever® collection. Go the the site, get the app, and upload your color for your space" "

THere is no way to see this in someone elses home and make a decision . If at all possiblreget a box lay it in your home with your stuff and your lighting that is the only way to do this if you are really concerned.