In some brick, the color of the brick is defined by adding a pigment to the clays before firing. Other times a coating is poured onto the face and sides of the brick. In addition, the temperature of the kiln and the combustion in the kiln will create other colors. With many brick a change in firing temperature of 50 degrees will change the colo r of the brick. Brick are generally fired between 1900 and 2100 degrees Fahrenheit.