When I get asked to do undertake colour printing I have to ask the question "What is the colour profile: CMYK or RGB?" and often get met with a confused response. There is a very valid reason for asking this - most laser printers contain 4 inks namely Cyan, Magenta, Yellow and Key (Black) and these are combined to give the range of colours available to a laser printer. RGB (Red, Green & Blue) is the colour spectrum used in screens and TVs which can also include light to provi