At the moment, in our living room we have one side, or rather one wall painted a dark grey/navy (Crown's Aftershow). I love it. The remaining 4 walls are white. Bearing in mind at one end there are patio doors so they take up most of one wall at one end and a large window at the other, so most of that wall is taken up too.
The ceiling is white, as are the skirting boards and door. Sofa is a light beige colour). The room is flooded with light and is approx 19x13ft appox.
I am wondering if it would look better if i painted the opposite wall dark as well? leaving the window wall and patio wall white? I don't know if i'm brave enough to do the whole room. DH likes it the way it is, i think he thinks it may make the room like its closing in. But i've seen a couple of pictures (granted they're on pinterest and they always look great) where the whole room is dark and it looks great. Do you think it could work? Having the two longer walls dark? I realise painting over the white will take about 3 coats! Feel free to post your dark rooms if you wish!