Colour centre in humans as an area specialized for colour vision. V2, also called the prestriate cortex, is believed to have a small role in colour processing by projecting signals from V1 to the V4-complex. Whether or not colour selective cells are present in V2 is still being investigated. Some optical imaging studies have found small clusters of red-green colour selective cells in V1 and V2, but not any blue-yellow colour selective cells. Other studies have shown that V2 is activated by colour stimuli, but not colour after images.[8] V4 also has feedback on V2, suggesting that there is a defined network
Colour trade mark the United States Court of Appeals ruled in 1985 that Owens Corning had the right to prevent competitors from using the colour pink in their insulation products, thus making Owens Corning the first company in the United States to trademark a colour. In 1995, the United States Supreme Court further acknowledged that a colour could be used as a trademark in the case of "Qualitex Co. v. Jacobson Products Co., Inc.", 514 U.S. 159 (1995). The trademark owner must show that the trademark colour has acquired substantial distinctiveness, and the colour indicates source of the goods to which it is