Take a look at Sherwin-Williams' Balanced Beige, used on the walls in the photo below.

Porters Rust Paint. It does look great as a feature but it's a shame most don't have the guts to use it. We are about to (next couple months) repaint our feature wall (10 years it's been maroon) to Porters Rust.

I would have to agree with keeping the wall with the windows neutral. Either stick with all neutral and bring colour in with accessories and some natural wood would lift the room too... if you desire a feature wall, can you use the other wall in this shot? If so you could go bold with an inky blue for drama as below or a grey as these look great with the black sofa...

Skip the feature wall. They are a bit dated. But as always have what you love. As there are so many paint choices you'd be best choosing after rug, furniture and art is chosen.