There were burn bans yesterday for areas around the sound, and with the stagnant air and warm weather I suspect that the orange (I saw it as orange/brown) color was a layer of NO2 a component of smog. From my house it appeared as a thin layer hanging about 200 feet off the water.
NO2 is brown at warm temperatures, and becomes a colorless form when the air is cooler (as is usually the case in winter, just not this January).
