Flag of Zambia was slightly altered so as to be more like the one used in the Zambian coat of arms. The design of the national flag of Zambia is described in National Flag and Armorial Ensigns Act of 4 June 1965. Green with an orange coloured eagle in flight over a rectangular block of three vertical stripes coloured from left to right in red, black and orange; of overall dimensions 3:2; and to the following colour specifications: The green was adjusted in 1996 to a lighter and brighter green. In 2012 The London Organising Committee of the Olympic and Paralympic Games solicited
Orange (colour) with green, of yellow with violet ... trying to make the colours intense and not a harmony of grey". In another letter he wrote simply, "there is no orange without blue." Van Gogh, Pierre-Auguste Renoir and many other impressionist and post-impressionist painters frequently placed orange against azure or cobalt blue, to make both colours appear brighter. The actual complement of orange is azure – a colour that is one quarter of the way between blue and green on the colour spectrum. The actual complementary colour of true blue is yellow. Orange pigments are largely in the ochre or cadmium families,