Quote:
Originally Posted by eltodesukane
Those windows are framed by differently colored bricks, similar to what you see in this photo.

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As that would be an interesting design, that is not what is happening on this building. Bricks are tinted grey, all of the cuts done to the brick at the edges, corners etc, build up with the red dust from the brick itself. You will see the end result after the brick washing is done.