color of concrete

with regard to the color of concrete, le corbusier wrote: ” it has been said that the appearance of the cement is dreary, that is to say that its color is dreary. this is just as false as to say that a color can be dreary per se, when in fact colors have value only in relation to their surroundings.” concrete is indeed a very different thing when seen in the blaze of the mediterranean sun.

also a great site  for more information.