Nice! The darkwood looks sophisticated and contrasts well with the sage green decor!

It is looking very nice so far! I would suggest increasing the size of your rug and add another to the seating area. It really helps spaces like this feel more comfortable. I can give you some examples of what might look nice if you would like.

These first two are transitional pieces (the rug in this comment is actually much closer to a sage green color than it appears) This style will provide some level of pattern while not being overbearing in the environment. Both of these rugs have a wool background and silk pattern. The rug in this comment is actually woven in the "broken" pattern style and is a new innovation in rug design.

These are traditional pieces. I noticed the rug under your table looks more traditional and these styles could also work with the dining area. These might be too much for the overall feel of the room if your want it to feel informal. However, rugs like these will add a definitive statement to a room.

The other style you might consider would be the Oushak. These rugs have handspun wool and natural dyes which creates a varied look across the rug. This style is great for someone who wants some design in their rug while keeping a casual feel. Many rugs in this style are brown in color which would compliment sage green really well. This style of rug will settle in to your design that you have already because of their subtle colors. In my opinion, this rug family will be the easiest to accommodate in the style you have.

You probably would be looking for two 6X9's in the sunroom and an 8X10 in the room with the tree. That's my best guess without measuring of course! Feel free to give me your feedback on any of the styles above. I can show more examples of them or even show you other styles if none of the above seem appealing.

Also, I really love the sage green you used and it is the color I used for my bedroom :)

I am sorry but we do not currently have a round in that color. However, we are able to commission pieces if any of our clients really need a specific color. Generally we caution our clients if they are considering a round. Round rugs are not as versatile as a rectangle as most spaces in a home would not be able to use a round rug. If you want to switch things up, you can easily move a rectangular rug to another space but with rounds you probably could not. Also if you decide in the future to upgrade, it can be difficult to sell a round rug (because of the space issue). This is not to steer you away from a round completely of course :) but it is something for you to keep in mind while designing.

Great job!

Looks really good; however, unlike most who post on Houzz, I'd lose the rug(s) -- the floor looks great so why cover it.