Blue–green distinction in language being described. For example, "blue" and "green" might be distinguished, but a single term might be used for both if the color is dark. Furthermore, green might be associated with yellow, and blue with black or gray. According to Brent Berlin and Paul Kay's 1969 study "", distinct terms for brown, purple, pink, orange and grey will not emerge in a language until the language has made a distinction between green and blue. In their account of the development of color terms the first terms to emerge are those for white/black (or light/dark), red and green/yellow. The word for blue
Green Dot (symbol) obvious links with the Chinese Taijitu (yin and yang) symbol and Gary Anderson's recycling symbol. Where full-color printing is available, its official form is printed in a light and a dark shade of green (Pantone 366C and 343C). For cost reasons or to avoid a visual clash with other symbols, many manufacturers chose a black-and-white or other color combination on their packages. The Green Dot logo merely indicates that a company has joined the Green Dot scheme, and "not" necessarily that the package is fully recyclable. The logo is often confused with the recycling logo. In Malta, Green Dot Malta