Rainbow number of colour bands of a rainbow may therefore be different from the number of bands in a spectrum, especially if the droplets are particularly large or small. Therefore, the number of colours of a rainbow is variable. If, however, the word "rainbow" is used inaccurately to mean "spectrum", it is the number of main colours in the spectrum. The question of whether everyone sees seven colours in a rainbow is related to the idea of linguistic relativity. Suggestions have been made that there is universality in the way that a rainbow is perceived. However, more recent research suggests that
National colours National colours National colours are frequently part of a country's set of national symbols. Many states and nations have formally adopted a set of colours as their official "national colours" while others have "de facto" national colours that have become well-known through popular use. National colours often appear on a variety of different media, from the nation's flag to the colours used in sports. Some noted supranational organisations like the United Nations and the European Union have their own “national colours” as part of the organisation’s branding and marketing. They are usually from the organisation’s flag. Although supranational organisations doesn’t