Or this chair, with brown walls.

I can see the first chair working great in a brown bedroom. Can you show a picture of these rooms to us? If you used the right bedding and the floors worked there's a possibility the curtains could work too. Look at the black accents in the brown room below. It's hard to tell without seeing the rooms and the furnishings.

Here is a link that might be useful:

I think that all of those elements will work well with brown walls, especially the zebra chair.

I was also thinking that the zebra chair would look really nice w/ the brown walls and black curtains! Maybe add liberal doses of white, grey and/or black accent pillows, pictures and such. Maybe throw in a pop of color like green here and there. Have fun!

This is the bedroom, with the model furniture in it, I will be buying all new and the two chairs are the only thing I knew I wanted to bring with me.

This is the living room with the model furniture.