Brown is a good colour for people who don't feel like getting up off the couch to go to the bathroom.
I think red
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Green and brown go together well, maybe a pattern that has some green and a brown that matches the color of your sofa.
white
red works with everything
oh and black with brown is good
I see a lot of turquoise and teal blue with brown in the stores and in magazines.
I would recommend adding a pop of color, so I think this turquoise and gold pillow would work really well: https://www.etsy.com/listing/162518852/t...
Here is another option: https://www.etsy.com/listing/179172407/t...
View of similar pillow on couch: http://www.ispacedesign.com/wp-content/u...
My sofa set is brown and I'm trying to find a nice color that go good with brown for the pillows...