Is the peach color in your second picture, the same as the orange in the first pic? But then, the wall above the opening looks kind of beige/cream. Do you have both colors in there?
I have to say that while I'm usually into grays, whites, blues, I kind of like the peach with your gray sofas, especially since the floor tiles read peach, too. If you paint anything green, the peachy tiles will look even peachier.
If painting is out, I'd decorate with plants, and get some art work in back and white, and add some accessories in lots of cream, white but also peach, yellow, maybe orange.
Or peach, and blue.
If your walls are more orange, I'd still go with lots of cream, gray, and green plants.
Q