My husband and I share an office.
There's three desks, his is a standing desk that you see to the left as you enter the room. Mine are on the far ends, one is a glass drawing desk the other is where my computer is, and is a lot smaller than people expect a desk to be (it's not as deep).
The walls are painted in a light palm green, so it's very calm and relaxing. The closet door is brown but it compliments the white trim and white door. The outlets and flooring are also in brown, so it feels sorta tropical in here.
We have some art on the walls, I have some comic art right now, my husband has an old Star Wars poster from when he was a kid (it's a vintage poster! lol). There's some bird pictures around the room (art/paintings not photos). In the middle of the large wall, between his desk and my art desk, we have a large white book shelf that houses almost all of our graphic novels, animation art books, and other random reference books we can't part with. It also has some stuffed animals on the very top shelf and some toys scattered around the books.
The window looks out into a large tree in the front yard, and beyond that we can see our neighbors miniature horses. The front yard has a lot of trees and bushes and we see a lot of resident birds here. And we hear airplanes (private planes mostly) flying over head all the time.
We're in here most of the day, so we wanted the office to be as comfortable as possible.