The 7th Day of Kwanzaa
The 7th, and last day, of a week long festival celebrating the African American people, their culture and their history.
On the seventh day the black candle is lit, then the farthest left red, the farthest right green, the next red candle, the next green, the final red and then the final green candle. This represents the 7th principle of Kwanzaa – Imani (ee-MAH-nee): Faith.
source: Kwanzaa on the Net – Seven Days of Celebration