What was the process used to create the white flooring: dyed on existing concrete, epoxy paint on existing concrete, or freshly poured concrete that had the dye added before the floor was spread on to the ground?

I too would love to know how the brown concrete floor was done and the stain colour?? Thank you!

Usually on concrete floors, an acid stain is applied to the surface of the standard grey concrete flooring surface. The artisans use a paint sprayer, and apply the stains in a mist over the top layer of the concrete. We usually finish it off with a sealer and waxes to protect the surface and produce the desired amount of sheen.

Concrete is a great material for flooring - we embrace and look forward to variations, irregularities, and the patina that develops with wear over time so the cracks and chips (if repaired and filled) can add to the 'beauty marks' on your floor. Concrete gives you great longevity, wear, ages beautifully, and is the same temperature as tile or natural stone.

http://www.modeconcrete.com/