"Farben" is the German word for “colors”. The first Farben releases (KLANG 19, 25, 32, 39, 48 and 65) all have different cover colors: black, white, cyan, magenta and yellow. These are the colors you use for printing (CMYK). Most colors can be made by mixing these. The covers also featured photos from the court process against the so called Baader-Meinhof Gang, a part of the militant left anti-imperialist movement Red Army Fraction (RAF).