John Family Room
If you were considering bringing the white around to this wall too, this would give you a sense of what it would like. I personally think this is a bit sterile, and would do something more with the stone/brick/wood on this wall to make more of a focal/accent wall, but it all depends on what aesthetic you are going for...
Something like this custom built above your fireplace to support and bring forward the tv would look cool, and would just require a decent trim carpenter
You could add a chunky wood mantel (hollow behind) to lower it a bit to balance top and bottom height a little better
Brings wall over and around fireplace out to mount tv
Another nice color scheme with the brown and the slate
Q