The color of a sofa is a very important role in giving the appearance of an interior. The use of brown color can indeed be one of the options and alternatives are also possible you can develop, ranging from the design, size, and some other features that exist. But you have to choose colors that contrast enough so that later could be more interesting to be placed in several other locations.
As for the use of some existing design, I think it could be developed in accordance with certain criteria of design, and whether the latter could be an option to continue to be developed or not.