National flag - Design - Colours stats of all countries

The occurrence of each colour in all the flags is listed in detail in the chart below. The chart shows that the colours light brown, dark brown and grey only occur in very small quantities. In fact, they only occur in the symbols of flags, such as in the Spanish flag.

Reference 1: Area (%) and Count of flags.

Reference 2: red, white, green, dark blue, yellow, light blue, black, orange, purple, light brown, dark brown and grey.

Source: http://en.wikipedia.org/wiki/National_flag