lab4 color modes

RGB-The RGB color model is an additive color model in which red, green, and blue light are added together in various ways.CMYK is a subtractive color model, used in color printing. indexed is a alphabetized list of names, places, and subjects treated in a printed work, giving the page or pages on which each item is mentioned. a grayscale is  range of gray shades from white to black, as used in a monochrome display or printout.