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
Legend of the Five Rings five interlocking rings. The only way to completely resolve the issue was to quit using the symbol. For the role-playing game this meant very little, but for the collectible card game it meant that the backing of the cards had to be redesigned, which left players with a mix of cards that essentially resulted in marked decks. In an attempt to appease the players, Wizards released the first set with the different backs – Spirit Wars – bundled with opaque sleeves that would obscure the designs on the backs of the cards, allowing players to use any mix of cards