This is a good concept reference for the wall with the fireplace and bookshelves. For my taste, I would like a deeper stone color for the fireplace. Like the brush back metal look for the doors and spark screen.
AMAZING tutorial on painting a dark stone fireplace to look naturally rustic. This will be my fireplace inspiration! erins art and gardens: painted stone fireplace before and after Squires Jahn Torgeson
Fireplace mantle and TV cabinet - Keeps the unsightly TV close by, but out of sight when not in use. Looks like classic old built-in rather than a TV cabinet. I'd paint the doors a coordinating room color.