Monochrome monitor & its evolution over the years Monochrome or monochromatic monitors are nothing but CRT computer monitors that typically display a single colour over a solid background. Widely used for digital display during the 20th century, the monochrome monitors are similar to a black and white TV set. However, they were earlier used in the office settings and generated only a single colour in each pixel, providing a crisp and clear display. With time, several advancements and variations were made to the monochrome monitors by adding a few colours to offer a wide range of options. Some manufacturers offered monitors with orange lettering's against a solid background or black lettering's on a green background. Further, to enhance the degree of visibility, the monitors were installed with brightness adjustment