Color theory dyes, paints and inks. It also created the dyes and chemical processes necessary for color photography. As a result, three-color printing became aesthetically and economically feasible in mass printed media, and the artists' color theory was adapted to primary colors most effective in inks or photographic dyes: cyan, magenta, and yellow (CMY). (In printing, dark colors are supplemented by a black ink, known as the CMYK system; in both printing and photography, white is provided by the color of the paper.) These CMY primary colors were reconciled with the RGB primaries, and subtractive color mixing with additive color mixing, by
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