A simple trick I learnt : How to find the exact complementary colour. Get the colour in a strong light.,,,sunlight preferable. Isolate it and stare at it intently for a minute or so, Close both eyes and see if you can see a colour..."reflected" on the inside of your eyelids.....THAT is the colour that will be a good complement for the one you want . In this instance, since the colour is mixed...you might "see" several. Looking at this electronic colour...( not the ideal scenario)...but.what I see is a light greeny/ grey, a swatch of the colour would be easier to do this with. Put the swatch on a white background and....stare,,,,so..."light grey" is close but maybe with a touch of green. Hope it is successful.

I didnt know Sherwin Williams paints and had to go look them up. They are nice. Good find! I would make the feature wall the TV wall, as the TV screen will help break up the colour.

If you are keeping the rug, take the blue or pink out of it, and use that as paint colour. Only problem is I think the rug may be too small. We like to consider each room as a whole, can you post different views please? Leave out things you're not keeping in there.

I agree to do your own thing! There were 10 feature walls in our last home, only two of which were painted same colour and that was because the rooms were opposite one another from the entry. In our current home, the only feature walls are in the theatre room, and we painted all the walls and ceiling. Walls are a deep plum and the ceiling is black (all matte).