Your link is defective. Just links to Pinterest and not the specific photo.

This fireplace has a mortar smear technique which is different than limewash.

You can apply a lot or a little limewash to brick. It's your decision. See images below.

Many thanks for the photos. The colors on these bricks look a lot better than what I was able to find online.

Would you consider removing your mantel and putting built-ins on the sides?

Are you able to see the entire photos (I can on my computer, but for some reason, my iPad is not letting me). Anyway, there are bricks at the bottom of the fireplace. Hopefully, you can see that. Would you suggest tearing out the bricks and having built-ins start from the floor?

So a couple options depending on what you're looking for. You could keep it as is and still put built ins under the sides (I think it would help ground the eye) and also make the split in materials feel more purposeful. So the mantel would be at the height of the tops of the built-ins. Or you could get rid of the mantel and do a single material if you'd prefer to draw the eye up (a further or, you could still do built ins and then do them any height you want, like full height).

I am not sure that having the bottom and the top in two different materials is necessary... You have that magnificent height which should be emphasized....Having the base different makes the fireplace look really small and disproportional to the space...top heavy. This is such a monumental element...take the advantage of it... Sometimes a use of different material can change a sense of scale, like in this project above where we wanted to make the space to feel taller and fireplace larger. In your case creating a illusion that FP is wider, the base wider would help the scale.

What an amazing job on that fireplace example!

Thank you...and the contractor did great job... :O)

Wow! Thanks for the visual. Seeing is believing...lol! I can see how that would balance things out a bit. Thank you!

The space need wide strokes....larger elements... The mantle is too thin. The left side (black should be in the angle towards the corner and split phase surface....with the light below the mantle to emprise the texture. The same material on the other side with the floating shelves to keep the corner towards hallway open. Asymmetry sometime works well...and the hearth material should not be brick but large scale tile....love the fan... so you need some more robust elements to complement that industrial look...