Poinsettia length. The colored bracts—which are most often flaming red but can be orange, pale green, cream, pink, white, or marbled—are often mistaken for flower petals because of their groupings and colors, but are actually leaves. The colors of the bracts are created through photoperiodism, meaning that they require darkness (12 hours at a time for at least five days in a row) to change color. At the same time, the plants require abundant light during the day for the brightest color. The flowers of the poinsettia are unassuming and do not attract pollinators. They are grouped within small yellow structures
Colour guard PLA up to the parade of 1959. Since 1981, the PLA has continued a tradition of the color guard detail with the PLA flag leading the Beijing Garrison Honor Guard Battalion in military parades. In December 2017, the Beijing Garrison Color Guard Company of the People's Armed Police, which is present during flag ceremonies in Tiananmen Square in Beijing carrying the national flag, was officially attached to the honor guard battalion. French colour guards are composed of: The colour guards of France's military academies tend to wear swords; those of NCO schools, other educational institutions and active units carry rifles