By applying a
mark it is easy to find the queen among the other bees and by the color also know her year of birth.
Only 5 colors are used to mark a queen.
White in the years ending 1 and 6
Yellow in the years ending 2 and 7
Red in the years ending 3 and 8
Green in the years ending 4 and 9
Blue in the years ending 5 and 0