Order of colors:
blue, white and red vertical stripes, blue being the side of the mat.
 
White: the color of the Bourbon kings.
Blue and red: the colors of Paris.
During the French Revolution, King Louis XVI agreed to these colors on 14 July 1790 on the 'Champs de Mars', meaning that the people of Paris was with the king.

The colors of Paris:

Red: the dynasty of the Carolingians
Blue: the Capιtiens.
The french flag summarizes the 3 dynasties that have made the history of France for 10 centuries.