n. property of changing colour on exposure to light or other radiation and of reverting to original colour immediately the light or radiation source is removed. photochromic, a.
Blue stands for faith and loyalty, the sea, lakes, and the sky. Black represents past suffering and is the colour of the traditional peasant's jacket. White symbolizes virtue and enlightenment and is the colour of snow, birch bark, and the midnight sun. Effective date: 16 November 1990.