Colour is important - choose the one that suites your needs and the look of your home.

Staining methods
There are a two main types of stain used to colour concrete::

Chemical staining involves the delivery of reactive metallic compounds into the upper surface of the concrete, where they react with the lime content (Calcium Carbonate) resulting in a more or less permanent and irreversible colour change within the concrete. Some rely on an acid to force their way into the concrete (acid-etch staining) while others are water based and simply soak in to the surface, carrying the reactive compounds with them.

Surface colourisers also work by soaking into the upper surface and may be water or solvent based. Rather than reacting chemically with the minerals in the concrete, the stain pigment is deposited in the tiny pores of the slab. Given that there are hundreds of thousands of such pores within each square meter of concrete, this can be a very effective colouring process.