- Spectrum's Mission Founded in 1982, Spectrum's mission is to strengthen, mobilize, and serve lesbian, gay, bisexual, transgender, and questioning people, and promote acceptance, understanding, and full inclusion in Marin County. Celebrating Twenty Years in Marin County and the North Bay 1982-2002 Save the date for Spectrum's Twentieth Anniversary Gala The Emerald City Ball Saturday, October ...www.spectrummarin.org