What does the orange in Orange Revolution represent?

I know the story behind the revolution. I just don't know where the orange comes in.

What does the orange in Orange Revolution represent?
It was the color chosen by Viktor Yushchenko for his electoral campaign and later came to be adopted as the protestor's color.





from Wikipedia:





"Orange was originally adopted by the Yushchenko's camp as the signifying color of his election campaign. Later the color gave name to an entire series of political terms, such as the Oranges (Pomaranchevi in Ukrainian) for his political camp and supporters. At the time when the mass protests grew, and especially when they brought about political change in the country, the term Orange Revolution came to represent the entire series of events."