Did you know that the use of the orange word is recent? Indeed, before the 14th century, people did consider orange as a shade of brown, red or yellow. It was not until the arrival of the fruit that the word was introduced and used. Red-haired people were, however, seen as untrustworthy during the Middle Ages since Judas was often represented as having red hair. Finally, orange is associated with the Orange royal family and consequently with the Netherlands. This important family became Protestants with time and orange has been used many times to represent this religion.
As mentioned above, orange is not very used for national flags. This is because it is less noticeable than red and because it is a secondary color. Most of the time, secondary colors are harder and more expensive to produce. Among the countries that use orange in their national flag, there is India, Bhutan, Ireland, and Ivory Coast. In the case of Ireland, the orange color represents Protestantism and the green color represents Catholicism.