"The rainbow flag made its debut in 1978 at San Francisco's Gay and Lesbian Freedom Day Parade... The original flag had eight colors, two more than its customary version, each representing an aspect of gay life: red for life, orange for healing, yellow for sun, green for nature, blue for harmony, and violet for spirit."
"In 2006, a straight family in Kansas had to defend flying a rainbow flag at their bed and breakfast from some angry townspeople... Understanding the wider symbolism, the owners nevertheless chose to fly the flag because their young son said it reminded him of the movie The Wizard of Oz, evoking the movie's signature song, Over the Rainbow."