There exist no consensus on the meaning of colors on the flag.
the Australia flag represents the british and the ancient australia
notchu
they signify that armenians are better
3 Colours on a Union Flag
The colours in the Icelandic Flag follow a law set in 1991 which states that the colours must be the following Standard colour of textile.
Japan's national colours are the same as the two colours of the Japanese flag - red and white.
these are the colours of the Irish flag
red is the traditional Chinese color for good luck!
The five rings represent the five continents that participate the colours are for all the countries that take part have a least one of those colours in their flag.
The flag of Ethiopia consists of three horizontal stripes, from top to bottom, green, yellow and red. These represent the colours of African unity. While this has been the flag's design consistently for nearly a century, originally, the colours in the flag were reversed.
Any scientific accepted theory exist about the choice and symbolism of these colors.