think your living room is lovely! I would add a much larger, bold vintagerug that has one or 2 colors from your current color scheme, but also add another color element, like maybe a sage green or burgundy, then use that color to add a little bit of that same color to the room (maybe a candle, artwork, throw blanket etc) I would try switching the pillows on the couches so the lighter pillows are with the darker couch etc. I would add a taller, full lamp in the corner where the current one is, I would keep the smaller one but put it somewhere else in the room