Hi. I'd bring in a large piece of art with some greys in it, but a lot of other light, bright or soft colour. Something sunny or misty in its effect. Then use the light bright (or soft) colours for your throw pillows, mixed with light grey. And as terrific as that ottoman is, I'd put it somewhere else and put a glass-topped (or mirror-topped) coffee table in there. The area looks too .... upholstered.

Hi! Here are a few ideas for you:

http://deciture.com/shop/decor/world-market/norman-wyatt-culture-shock-panels-set-2/
(could hang horizontally)

http://deciture.com/shop/decor/world-market/momentary-canvas/
(mimics the circles on your pillows)

http://deciture.com/shop/decor/world-market/the-abstracted-by-jane-bellows-48inx23in/
(throws in a nice pop of orange)

Hope this helps!

Great couch! If leave the ottoman if you enjoy using it. I love the flexibility of making our sectional into a huge surface. If put the biggest piece of art you can find that you love. Don't forget to hang it only a few inches above the couch. I think 5 to 10 inches is recommended. I'd check out Marshall's if you're on a budget.

How about something like this? Your sofa becomes the backdrop and then you could just change out the pillows

Oops

Here
http://houzz.com/photos/3053498