Carrots are on the menu for ages. But originally carrots didn’t have the orange color that they have right now. Back in the Middle Ages carrots were mostly puple, white and yellow. In the 17th century the orange carrot became more popular.
At that time, Willem van Oranje got the power in the Netherlands. As an honor to him and the Netherlands, farmers cultivated mostly orange carrots. Since the Netherlands was one of the main cultivators of carrots in the world, we eat mostly orange carrots nowadays.