Primary color overlaid partially absorbing materials on a reflecting or transparent surface. Each layer partially absorbs some wavelengths of light from the illumination spectrum while letting others pass through multiplicatively, resulting in a colored appearance. Overlapping layers of ink in printing mix subtractively over reflecting white paper in this way to generate photorealistic color images. The typical number of inks in such a printing process ranges from 3 to 6 (e.g., CMYK process, Pantone hexachrome). In general, using fewer inks as primaries results in more economical printing but using more may result in better color reproduction. Cyan, magenta, and yellow are good
Blue–green distinction in language from light blue to light grey. However, the term for a green apple, such as a Granny Smith, would be "ubhal glas". The boundary between colors varies much more than the "focal point": e.g. an island known in Breton as "Enez glas ("the blue island")" is called in French "l'Île Verte ("the green island")", in both cases referring to the greyish-green color of its bushes, even though both languages distinguish green (as in lawn grass) from blue (as in a cloudless midday sky). The Romance terms for "green" (Catalan ', French ', Italian, Portuguese, Romanian and Spanish ') are all