National flag common for colours to be presented in bands of three. It is common for many flags to feature national symbols, such as coats of arms. National patterns are present in some flags. Variations in design within a national flag can be common in the flag's upper left quarter, or canton. The most popular colours in national flags are red, white, green, dark blue, yellow, light blue, and black. The occurrence of each colour in all the flags is listed in detail in the table below. The table shows that the colours light brown, dark brown and grey only occur in
Flag of Wales form of the Draco standards borne by the Roman cavalry, itself inspired by the symbols of the Dacians or Parthians. The Olm (Proteus anguinus) of Slovenia bear a similarity in miniature to the Draco standard and they are referred to as baby cave dragons by the locals. The green and white stripes of the flag were additions by the House of Tudor, the Welsh dynasty that held the English throne from 1485 to 1603. Green and white are also the colours of the leek, another national emblem of Wales. The oldest known use of the dragon to represent Wales is