In 1379, one Thomas de Crosby was entered in the Poll Tax Returns of Yorkshire, and in 1383, Henry Crosseby, witness, was noted in the Assize Court Rolls of Warwickshire. Sir John Crosby was sheriff of London in 1470, and Brass Crosby, lord mayor of London (1770), became president of Bethlehem Hospital in 1772.
Monochromatic colors are all the colors (tints, tones, and shades) of a single hue. Example of a monochromatic color scheme. Monochromatic color schemes are derived from a single base hue and extended using its shades, tones and tints. Tints are achieved by adding white and shades and tones are achieved by adding a darker color, gray or black.
Black is the darkest color, the result of the absence of or complete absorption of light. It is the opposite of white (the combined spectrum of color or light). It is an achromatic color, literally a color without color or hue. It is one of the four primary colors in the CMYK color model, along with cyan, yellow, and magenta, used in color printing to produce all the other colors. Black was one of the first colors used by artists in neolithic cave paintings.