NOTE: 1  Gasses react more rapidly with moist rather than dry litmus. 2  Gasses change the color of litmus paper over its entire exposed surface, not just at the edges because they make contact over the entire surface. 3  The neutral gasses nitrogen and oxygen do not affect the color of either red or blue litmus.
The tradition of giving leis to graduates has now spread to the mainland. Many graduation leis at stateside schools are designed to reflect school spirit by incorporating flowers, yarn, ribbons or other materials in the graduate's school colors.
Lei is considered as a symbol of Aloha in Hawaii which means peace, love, affection, friendship and respect. Lei is used in Hawaii from a long time even by opposition parties as a sign of peace and harmony. Lei was introduced to Hawaiians by Polynesians, who loved decorations with strings of flowers.