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.
The lei is given as a symbol of the âspirit of aloha,â which means a greeting, farewell, joy, hope, love, or other positive feelings. Leis made of beautiful flowers are meant as a non-verbal expression of aloha spirit. In Hawaii, leis are almost always seen at weddings.