Rainbow flag India during the week of Amartithi (the anniversary of his death on January 31, 1969). Rainbow is used as an element of flag of Patriots of Russia (Russian: Патриоты России, "Patrioty Rossii") political party. This rainbow flag in Italy was first used in a peace march in 1961, inspired by similar multi-coloured flags used in demonstrations against nuclear weapons. It became popular with the "Pace da tutti i balconi" ("peace from every balcony") campaign in 2002, started as a protest against the impending war in Iraq. The most common variety has seven colours, purple, blue, azure, green, yellow, orange and
Theory of Colours L. Sepper in the book, "Goethe contra Newton: Polemics and the Project for a New Science of Color" (Cambridge University Press, 2003). Theory of Colours Theory of Colours (German: "Zur Farbenlehre") is a book by Johann Wolfgang von Goethe about the poet's views on the nature of colours and how these are perceived by humans. It was published in German in 1810 and in English in 1840. The book contains detailed descriptions of phenomena such as coloured shadows, refraction, and chromatic aberration. The work originated in Goethe's occupation with painting and mainly exerted an influence on the arts (Philipp Otto