Renovation time for fireplace

Just in time for those cold winter months, I decided to renovate our fire place. I wanted a minimalist style that was a bit more in line with Mies Van Der Rohe's "Less is more" aphorism.

Fireplace before renovation:

Fireplace during renovation:

We now have a new fireplace. Gray and in stone. A bit to shiny finish for my liking, but I am happy. However, the gray does not really go well with the brown on the wall, so looking for a white or gray white color for the walls. A friend suggested I just paint the wall above the fireplace to minimize the work of painting the whole living room. If you have other suggestions, please let me know.